How to Choose Outdoor Showers: A Complete Buying Guide for 2026
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Choosing the right outdoor shower buying guide can be confusing with so many options available. You need to decide between portable solar tanks and heavy freestanding units. This 2026 guide helps you compare 8 models based strictly on their published specifications. We look at tank capacity, heating methods, and base stability to match your specific needs.
You will learn how to select a unit that fits your space and usage habits. The list includes solar heated options for garden rinsing and marble-based fixtures for poolside stability. Some models offer foot washes, while others provide full privacy enclosures. Each recommendation is ranked by its technical attributes, such as material durability and dimensions. You can use these facts to pick the best shower for your backyard or patio without guessing.
Our top pick: Papababe 16-Gallon Solar Outdoor Shower.
Key Outdoor Shower Specs to Check
Heating method and power source
You must decide how the water reaches a usable temperature. Solar tanks like the Papababe 16-Gallon model rely on sunlight to warm stored water, which requires clear sky time and patience. Freestanding units typically connect to your home’s cold water line, delivering instant but unheated flow. Some models, such as the AMGYM 20-Gallon, offer larger solar capacity for longer rinses. You need to match the heating method to your climate and usage habits. If you want immediate hot water, a solar tank may not suffice. If you prefer zero energy costs, solar is ideal. Always check if the unit includes a heating element or relies solely on ambient heat.
- Solar panel efficiency rating
- Connection to cold water line
- Warming time in sun
Material and corrosion resistance
Outdoor fixtures face rain, sun, and pool chemicals. Stainless steel units like the KES Freestanding model offer strong durability against rust and physical impact. The brushed finish on steel helps hide water spots and minor scratches. Plastic or PVC enclosures, such as the YITAHOME option, resist corrosion but may feel less premium. Wood structures like the Haddockway enclosure provide aesthetic appeal but require maintenance to prevent rot. You should choose materials that match your local weather. Coastal areas need marine-grade steel like the WCQQ 316 model to handle salt air. Inland areas can tolerate standard steel or treated wood. Check the material grade to ensure long-term stability without frequent repairs.
- 316 vs 304 steel grade
- UV-resistant plastic or PVC
- Treated wood or sealant
Tank capacity and water volume
The size of the water reservoir determines how long you can rinse. Solar tanks range from 16 gallons, like the TLSUNNY model, to 20 gallons, such as the AMGYM unit. Larger tanks provide more water for extended showers or multiple users. However, a full tank adds significant weight. A 20-gallon tank holds about 167 pounds of water alone. You need to ensure your deck or patio can support this load. Smaller tanks are easier to move and refill but may run out quickly. Consider your typical shower duration. If you take long rinses, aim for 16 gallons or more. If you just need a quick rinse, smaller options suffice.
- Gallon capacity rating
- Total weight when full
- Refill time from hose
Foot shower and spray features
Many outdoor showers include a foot shower to rinse sand and dirt before stepping into the main shower area. The Papababe model explicitly highlights this feature for hygiene. Some units, like the KES Freestanding model, offer separate foot and head sprays. This design keeps the main showerhead cleaner. You should check if the spray head rotates or adjusts. The TLSUNNY model includes a rotating shower head for better coverage. Fixed heads may leave spots dry. Consider your height and showering style. If you prefer a wide spray, look for rain shower heads. If you want precision, a standard spray head works best. Ensure the foot shower is positioned at a comfortable height.
- Separate foot shower valve
- Rotating or adjustable head
- Spray pattern type
Base stability and footprint
Freestanding units need a stable base to prevent tipping. The KES Marble Base model uses heavy stone to anchor the steel structure, making it ideal for windy poolside areas. Plastic enclosures like the YITAHOME option rely on a wide footprint and heavy weight, often exceeding 100 pounds, to stay upright. You must place the unit on level ground. Uneven surfaces can cause instability. Check the base dimensions. A wider base, such as the 19.7-inch square base on the KES model, offers better balance than narrow stands. If you live in a windy area, prioritize heavy bases. For temporary setups, lighter portable tanks may be acceptable if secured properly.
- Base material weight
- Footprint width and depth
- Leveling feet or pads
Height and ergonomic reach
The height of the showerhead determines comfort for users of different sizes. Most freestanding units stand between 81 and 90 inches tall. The WCQQ model reaches 89.4 inches, while the TLSUNNY reaches 90 inches. You need to ensure the showerhead is high enough for tall users but not so high that it is hard to reach the controls. Portable tanks often sit on a stand, placing the showerhead at a similar height. Check the total height specification. If you have children, a lower unit may be safer. For average adults, 85 inches or more is usually ideal. Ensure the unit fits under any existing patio covers or trees.
- Total unit height
- Showerhead height from ground
- Control valve position
Types of Outdoor Shower Units
Solar Tank Showers
Solar tanks like the Papababe 16-Gallon and AMGYM 20-Gallon models use sunlight to heat stored water. You fill the tank and let the sun do the work. This method is energy-free but depends on weather. The Papababe offers a 16-gallon capacity and a foot wash feature. The AMGYM provides a larger 20-gallon tank. These units are portable and fit poolside or garden spots. You trade instant heat for simplicity and low maintenance.
Freestanding Steel Units
Freestanding steel units connect directly to a water line. The KES Marble Base and WCQQ 316 Stainless Steel models provide stable, permanent rinsing. The KES features a heavy stone base for stability and a rain shower head. The WCQQ uses marine-grade steel for durability in wet environments. These options suit users who want consistent water pressure and temperature without waiting for solar heating. They require a hose connection and a flat surface for installation.
Outdoor Shower Enclosures
Enclosures provide privacy and storage alongside rinsing. The Haddockway Solid Wood and YITAHOME PVC models create a dedicated space. The Haddockway uses black walnut wood for natural aesthetics. The YITAHOME offers a white PVC build with significant weight for wind resistance. These units are ideal for backyards where privacy is a priority. They add a structural element to your outdoor space. You gain storage and shelter but need more floor space for installation.
Common Mistakes to Avoid
Ignoring drainage requirements for water runoff
You must ensure the ground can handle the water volume. Many units hold over ten gallons. Without proper drainage, water pools around the base. This creates mud and potential slip hazards. Plan for a gravel area or connect to a drain system before installation to keep the site usable.
Placing the unit in deep shade
Solar heating models rely entirely on direct sunlight. If you place a tank in a shaded spot, the water will remain cold. You need several hours of direct sun exposure to reach comfortable temperatures. Choose a location with minimal tree cover or building shadows during the peak heating hours of the day.
Overlooking the weight of filled units
Water is heavy, adding significant load to your structure. A twenty-gallon unit weighs over one hundred sixty pounds when full. You must verify that decks or platforms can support this static weight. Check the load capacity of your outdoor furniture or built-in stands to prevent structural damage or collapse under the load.
Forgetting to winterize or store the unit
Freezing temperatures can crack plastic tanks and damage valves. You should empty all water completely if temperatures drop below freezing. Store the unit indoors or cover it with an insulated wrap designed for outdoor equipment. This prevents costly repairs and extends the lifespan of your shower system significantly through cold seasons.
Quick picks
Our 8 picks
Papababe 16-Gallon Solar Outdoor Shower
Best for: high-capacity solar rinsing with foot wash
- Heating Source
- Solar
- Tank Capacity
- 16 Gallon
- Primary Material
- PVC
- Spray Outlets
- Top shower head, handheld, foot shower
- Overall Height
- 79 inches
- Water Inlet Type
- GHT 3/4", 1/2" quick connector
This Papababe unit uses a 16-gallon black PVC tank to heat water via solar energy. It reaches temperatures up to 140°F without electricity. You get a 360° rainfall head, a 5-foot handheld sprayer, and a foot wash faucet. The 79-inch height suits most users. Standard GHT 3/4-inch hose connections make setup simple for poolside or garden use.
Pros
- 16-gallon tank capacity for extended use
- Solar heating reaches 140°F without power
- Includes top rainfall, handheld, and foot wash outlets
- Thickened PVC and metal connectors resist leaks
- Standard GHT 3/4-inch hose compatibility
Cons
- 79-inch height is shorter than some competitors
- PVC construction feels less premium than stainless steel
- No electric heating backup for cloudy days
Good fit if
- You want a high-capacity 16-gallon tank
- You need a foot wash faucet for poolside hygiene
- You prefer solar heating over electric options
Skip if
- You require stainless steel construction for durability
- You need electric heating for consistent temperatures
- You prefer a taller 82-inch or higher unit
Verdict: Papababe 16 Gal Solar Outdoor Shower is a high-capacity solar option for users who prioritize tank size and foot washing. It fits poolside or garden spots where standard hose connections and solar heating are sufficient.
KES Freestanding Outdoor Shower with Marble Base
Best for: stable poolside rinsing with separate foot wash
- Primary Material
- 18/8 stainless steel, marble base
- Spray Outlets
- Rain shower head, foot rinse
- Showerhead Diameter
- 8 inches
- Overall Height
- 87.7 inches
- Water Inlet Type
- 3/4" double female GHT brass adapter
- Use
- Outdoor, Poolside
View on Amazon: KES Freestanding Outdoor Shower with Marble Base
This KES freestanding outdoor shower features an 8-inch rain shower head and a separate foot rinse valve. The 18/8 stainless steel body rests on a 38 lb weighted marble base for stability. It stands 87.7 inches tall with controls at 51 inches. The brass adapter connects to standard garden hoses. It suits users who want a durable, stable unit for poolside rinsing without complex installation.
Pros
- Weighted marble base provides superior stability without water filling
- 8-inch rain shower head offers full-body coverage
- Separate foot rinse valve saves water and targets sand
- Rust-resistant 18/8 stainless steel handles coastal air well
Cons
- Foot rinse and shower share a single water inlet
- Garden hose is not included in the package
- Requires assembly using included tools and hardware
Good fit if
- You need a stable unit that resists wind gusts
- You want separate controls for feet and body
- You have a standard garden hose connection nearby
Skip if
- You prefer a unit with a built-in water tank
- You want a pre-assembled unit with no tools
- You need a handheld shower wand for flexibility
Verdict: KES Marble Base Outdoor Shower is a solid choice for poolside rinsing thanks to its heavy marble base and durable steel build. It fits users who prioritize stability and separate foot cleaning over portable tank designs.
AMGYM 20-Gallon Solar Heated Outdoor Shower
Best for: poolside rinsing and pet bathing
- Heating Source
- Solar
- Tank Capacity
- 20 gal
- Primary Material
- PVC, metal
- Spray Outlets
- Top rainfall, handheld hose, foot shower
- Overall Height
- 82 in
- Water Inlet Type
- GHT 3/4" threads, 1/2" quick connector
The AMGYM 20Gal Solar Heated Outdoor Shower uses a black PVC tank to absorb sunlight, heating water up to 140°F without electricity. It connects to standard garden hoses via GHT 3/4" threads. The unit includes a 360° rotating rainfall head, a 5-foot handheld sprayer, and a dedicated foot wash faucet. This freestanding design stands 82 inches tall and is built for outdoor poolside or garden use.
Pros
- 20-gallon tank heats water up to 140°F using solar energy
- Includes three spray outlets: rainfall head, handheld hose, and foot shower
- Built with thickened PVC and metal connectors for durability
- Connects to any standard garden hose with included 1/2" quick connector
Cons
- Only provides warm water via solar heating, no electric heating element
- Requires direct sunlight to reach maximum temperature
- Foot shower faucet is a separate outlet, not a combined mixer
Good fit if
- You want to rinse off sand or mud before entering a pool or home
- You need a high-capacity shower for multiple users or pets
- You have a sunny outdoor space for solar heating
Skip if
- You need instant hot water regardless of weather conditions
- You require electric heating for consistent temperature control
- You have limited space for an 82-inch tall unit
Verdict: AMGYM 20Gal Solar Heated Outdoor Shower is a practical solution for poolside rinsing and garden cleanup. It suits users who prioritize capacity and solar efficiency over instant electric heating.
TLSUNNY 16-Gallon Solar Outdoor Shower
Best for: Solar heated poolside rinsing
- Heating Source
- Solar heated
- Tank Capacity
- 16 gallons
- Primary Material
- PVC
- Spray Outlets
- Rotating shower head, foot faucet
- Overall Height
- 90 inches
- Water Inlet Type
- G1/2" and standard garden hose
The TLSUNNY outdoor shower uses a 16-gallon black tank to heat water via solar energy. It stands 90 inches tall and includes a 360-degree rotating head and a foot faucet. You can fill it with a garden hose or let the sun warm the water. This setup suits poolside rinsing or backyard pet washing. The PVC and Oxford cloth build is durable but requires floor anchoring for stability.
Pros
- 16-gallon capacity serves 4-5 people
- Solar heating reaches 140°F
- 360-degree rotating shower head
- Includes foot faucet for pets
- Connects to standard garden hose
Cons
- Requires anchoring screws for stability
- No temperature gauge included
- Water pipe not included
Good fit if
- You want solar heated water
- You need a foot faucet
- You have a garden hose
Skip if
- You need instant hot water
- You want a built-in heater
- You dislike anchoring hardware
Verdict: The TLSUNNY 16 Gal Solar Outdoor Shower is a practical solar option for rinsing off after a swim. It fits users who have a garden hose and want to warm water using sunlight.
KES Freestanding Marble Base Outdoor Shower
Best for: stable poolside rinsing with separate foot cleaning
- Primary Material
- 18/8 stainless steel
- Spray Outlets
- Rain spray, foot rinse spout
- Showerhead Diameter
- 8"
- Overall Height
- 87.7 inches
- Water Inlet Type
- 3/4" double female GHT brass adapter
- Use
- Outdoor, Poolside
This freestanding unit features a heavy 38 lb natural stone base for stability without water filling. The 18/8 stainless steel body resists rust and corrosion. An 8-inch rain-style showerhead offers two spray modes. A separate foot rinse spout allows targeted cleaning. It connects to standard garden hoses via a brass adapter. The overall height is 87.8 inches, making it suitable for most adults.
Pros
- Weighted marble base provides superior stability on uneven ground
- 18/8 stainless steel construction resists rust and corrosion
- 8-inch showerhead delivers full-body coverage with two spray modes
- Separate foot rinse spout saves water and targets sandy feet
Cons
- Garden hose is not included in the package
- Requires assembly with included tools and hardware
- No built-in temperature control or mixing valve
Good fit if
- You need a stable shower that does not tip in wind
- You want a rust-resistant unit for coastal or poolside use
- You prefer separate controls for body rinsing and foot cleaning
Skip if
- You need a pre-assembled unit ready for immediate use
- You require a built-in heater or temperature adjustment
- You are looking for a shower with a built-in hose
Verdict: KES Freestanding Outdoor Shower with Marble Base is a durable choice for users who prioritize stability and corrosion resistance. The heavy stone base and stainless steel build make it ideal for permanent poolside installation where wind or uneven ground is a concern.
Haddockway Solid Wood Outdoor Shower Enclosure
Best for: Private outdoor rinsing with natural wood aesthetics
- Primary Material
- Solid wood
- Overall Height
- 82.7 inches
- Use
- Outdoor
- Dimensions
- 39.5 × 39.5 × 82.5 inches
- Weight
- 84 pounds
View on Amazon: Haddockway Solid Wood Outdoor Shower Enclosure
This Haddockway outdoor shower enclosure is built from black walnut solid wood with waterproof and UV-resistant treatment. It stands 82.5 inches tall and measures 39.5 inches wide. The unit includes two built-in shelves for storage and a secure iron door bolt for privacy. It is designed for year-round durability in sun, rain, or harsh weather. You will need two people for assembly, which takes approximately one to two hours.
Pros
- Constructed from premium solid wood with waterproof and UV-resistant treatment
- Includes two built-in shelves for shampoo and towel storage
- Features a sturdy iron door bolt for secure privacy
- Stands 82.5 inches tall to accommodate various user heights
Cons
- Requires assembly by two people, taking one to two hours
- Weighs 84 pounds, making it heavy and less portable
- Does not include a shower head or water supply connections
Good fit if
- You want a durable, all-weather structure for a poolside or backyard setting
- You need built-in storage for shower essentials without extra accessories
- You prioritize natural wood aesthetics and complete privacy
Skip if
- You prefer a lightweight, portable unit that one person can move
- You want a pre-assembled unit ready for immediate use
- You need a stainless steel or marble base for a modern look
Verdict: Haddockway Solid Wood Outdoor Shower Enclosure offers a sturdy, private space for outdoor rinsing. It fits well in gardens or by pools where you value natural wood durability and built-in storage.
YITAHOME 46x46 PVC Outdoor Shower Enclosure
Best for: stable backyard rinsing with privacy and storage
- Primary Material
- PVC
- Overall Height
- 81.3"
- Use
- Outdoor
- Dimensions
- 46 × 46 × 81.3 inches
- Weight
- 103 pounds
This PVC outdoor shower enclosure offers 81.3 inches of height and a 46 by 46 inch footprint. The X-pattern design enhances stability for your backyard or patio. You get built-in storage with a shelf and four hooks. Secure metal hinges and latches provide privacy. The unit weighs 103 pounds and anchors to concrete or wood.
Pros
- Weather-resistant PVC construction resists rust and corrosion
- Patented X-pattern design improves structural stability
- Includes a built-in shelf and four sturdy hooks for storage
- Features secure inside and outside latches for privacy
Cons
- Heavy 103-pound weight requires a solid surface for installation
- Assembly takes approximately two hours and ships in two boxes
- PVC material may feel less premium than metal or wood options
Good fit if
- You need a private, weatherproof space for rinsing off after swimming
- You want a stable unit with integrated storage for towels and soap
- You have a concrete or wood deck ready for anchoring
Skip if
- You prefer a lightweight unit that does not require bolting down
- You want a quick setup without assembly or tools
- You are looking for a metal or wooden aesthetic
Verdict: YITAHOME 81" Outdoor Shower Enclosure suits you if you need a sturdy, private rinsing station with built-in storage. The heavy PVC build ensures it stays anchored against wind.
WCQQ 89.4-Inch 316 Stainless Steel Shower
Best for: Durable rinsing for poolside or patio areas
- Primary Material
- 316 marine grade stainless steel
- Spray Outlets
- Rainfall headshower, handheld shower
- Showerhead Diameter
- 10 inches
- Overall Height
- 89.4 inches
- Use
- Outdoor
- Dimensions
- 17.7 × 10 × 89.4 inches
This freestanding outdoor shower uses 316 marine grade stainless steel for rust resistance. It features a matte black finish and an 89.4 inch height. The unit includes a 10 inch rainfall head and a handheld shower. You get two spray modes for rinsing. It stands on a patio or poolside without wall mounting. The build is solid and designed for harsh weather.
Pros
- 316 marine grade stainless steel construction resists rust and corrosion
- 89.4 inch overall height provides comfortable standing showering
- 10 inch rainfall showerhead offers wide coverage spray
- Includes handheld shower option for versatile cleaning
Cons
- No solar heating or water tank included for hot water
- Does not mention a weighted base for stability
- Requires external water source and drainage setup
Good fit if
- You need a durable, rust-proof shower for a poolside or patio
- You want a tall freestanding unit without wall mounting
- You prefer a matte black finish for modern outdoor decor
Skip if
- You need built-in heating for warm water
- You require a compact unit for small spaces
- You want a shower with a weighted base for immediate stability
Verdict: WCQQ 316 Stainless Steel Outdoor Shower suits buyers who need a tall, durable fixture for rinsing off after swimming. It is ideal for patios where wall mounting is not an option. The marine grade steel ensures longevity in wet environments.
Specifications side by side
| Spec | Papababe 16-Gallon Solar Outdoor Shower | KES Freestanding Outdoor Shower with Marble Base | AMGYM 20-Gallon Solar Heated Outdoor Shower | TLSUNNY 16-Gallon Solar Outdoor Shower | KES Freestanding Marble Base Outdoor Shower | Haddockway Solid Wood Outdoor Shower Enclosure | YITAHOME 46x46 PVC Outdoor Shower Enclosure | WCQQ 89.4-Inch 316 Stainless Steel Shower |
|---|---|---|---|---|---|---|---|---|
| Heating Source | Solar | not specified | Solar | Solar heated | not specified | not specified | not specified | not specified |
| Tank Capacity | 16 Gallon | not specified | 20 gal | 16 gallons | not specified | not specified | not specified | not specified |
| Primary Material | PVC | 18/8 stainless steel, marble base | PVC, metal | PVC | 18/8 stainless steel | Solid wood | PVC | 316 marine grade stainless steel |
| Spray Outlets | Top shower head, handheld, foot shower | Rain shower head, foot rinse | Top rainfall, handheld hose, foot shower | Rotating shower head, foot faucet | Rain spray, foot rinse spout | not specified | not specified | Rainfall headshower, handheld shower |
| Showerhead Diameter | not specified | 8 inches | not specified | not specified | 8" | not specified | not specified | 10 inches |
| Overall Height | 79 inches | 87.7 inches | 82 in | 90 inches | 87.7 inches | 82.7 inches | 81.3" | 89.4 inches |
| Water Inlet Type | GHT 3/4", 1/2" quick connector | 3/4" double female GHT brass adapter | GHT 3/4" threads, 1/2" quick connector | G1/2" and standard garden hose | 3/4" double female GHT brass adapter | not specified | not specified | not specified |
| Material | not specified | Stainless Steel | not specified | not specified | not specified | not specified | not specified | Stainless Steel |
| Features | Solar Heated | Rain Shower Head, Foot Shower | Solar Heated | Solar Heated, Rotating Shower Head | not specified | not specified | not specified | not specified |
| Use | Outdoor, Poolside, Garden | Outdoor, Poolside | Outdoor | not specified | Outdoor, Poolside | Outdoor | Outdoor | Outdoor |
| Dimensions | 7.81 × 9.45 × 79 inches | 19.7 × 19.7 × 87.8 inches | 8 × 8 × 82 inches | 9 × 7.16 × 90 inches | 19.7 × 17.7 × 87.8 inches | 39.5 × 39.5 × 82.5 inches | 46 × 46 × 81.3 inches | 17.7 × 10 × 89.4 inches |
| Weight | not specified | not specified | not specified | 27.2 pounds | 54.6 pounds | 84 pounds | 103 pounds | not specified |
| Size | 16 Gal | not specified | 20 Gallon | 16 gal | not specified | not specified | 81"H x46"W x 46"L | not specified |
| Color | Black | Brushed Finish | Black | Black | Brushed Nickel | Black Walnut | White | Black |
| Model | solar shower | ODS200F18-BS | solar shower | TL-SH-ER | ODS201F18-BN | 06-065-Black Walnut | MAYIHhKQ2b | WQ-1129 |
If you plan a complete backyard installation, you can review fuel specs in the outdoor pizza oven buying guide.
Frequently asked questions
How tall is a standard outdoor shower?
Most freestanding units range from 79 to 90 inches in height. The Papababe 16-Gallon model stands at 79 inches, while the TLSUNNY model reaches 90 inches. Freestanding steel options like the KES model are typically 87.8 inches tall. You should measure your space to ensure the fixture fits comfortably without obstruction.
Do outdoor showers need to be connected to a water line?
Not all models require a permanent connection. Solar tank showers like the AMGYM 20-Gallon and Papababe 16-Gallon are portable and filled manually. You can connect them to a garden hose for filling. Freestanding units like the KES and WCQQ models often connect directly to a home water supply for continuous flow.
What material is best for outdoor shower durability?
Stainless steel and solid wood are top choices for longevity. The WCQQ model uses 316 marine-grade stainless steel to resist corrosion in wet environments. The KES models combine stainless steel with heavy marble bases for stability. The Haddockway enclosure uses black walnut wood for natural durability and aesthetic appeal in garden settings.
How much water capacity do solar showers hold?
Portable solar units typically hold between 16 and 20 gallons. The Papababe and TLSUNNY models both offer 16-gallon capacity. The AMGYM model provides a larger 20-gallon tank. This volume allows for longer rinsing sessions without needing to refill, which is useful for poolside cleanup or pet bathing.
Are there outdoor showers with foot wash features?
Yes, several models include dedicated foot washing stations. The Papababe 16-Gallon unit is designed with a foot wash feature for rinsing sand before entering the house. The KES Freestanding model also includes a separate foot shower. This allows you to clean your feet while standing under the main shower head.
What is the weight of a freestanding marble base shower?
Freestanding units with stone bases are heavy to ensure stability. The KES model with a brushed nickel finish weighs 54.6 pounds. The black finish version of the same model is also substantial. This weight prevents tipping in windy conditions and provides a solid foundation for the stainless steel structure.
Do outdoor shower enclosures offer privacy?
Enclosure units provide a private space for rinsing. The Haddockway solid wood enclosure offers a sturdy, private area with natural wood aesthetics. The YITAHOME PVC enclosure is 81 inches high and includes built-in storage. These structures shield you from view, making them suitable for backyard or poolside installations where privacy is valued.
How wide are portable solar shower tanks?
Portable solar tanks are designed to be compact for storage. The Papababe 16-Gallon tank is 9.45 inches wide. The AMGYM 20-Gallon model is 8 inches wide. The TLSUNNY unit measures 7.16 inches in width. These slim profiles allow them to fit easily in small garden spots or against walls when not in use.