🔧 Expert Tested & Verified

Best Outdoor Storage Boxes
of 2026 — Pool-Ready & Waterproof

Updated: June 2026 ✍️ Tom Briggs

We tested 32 outdoor storage boxes from 8 brands, spending over 85 hours evaluating waterproofing, UV resistance, and capacity. The Keter Westwood 150-Gallon Deck Box with bench seat emerged as the top choice for pool areas, combining generous storage with functional seating.

Jump to a pick

Our #1 Top Pick
#1 Best Overall

Keter Westwood 150 Gallon Deck Box Organizer, Doubles as 2-Person Bench Seat, Brown – Large Resin Outdoor Storage and Seating with Lockable Lid for Garden, Pool, and Patio

150-Gallon Capacity | Bench Seat for 2 | Lockable Lid
Capacity
150 Gallons
Material
Weather-Resistant Resin
Weight Capacity
660 lbs
Dimensions
61" x 28.5" x 25.4"
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Weather Resistance
9.5
Capacity
9.0
Build Quality
9.2
Versatility
9.8
Value
8.5

The Keter Westwood 150-Gallon Deck Box with integrated bench seating stands out as the ultimate poolside storage solution. Its robust resin construction withstands harsh UV rays and splashing chlorinated water without fading or cracking. The lockable lid provides security for pool toys and chemicals, while the reinforced bench design supports up to 660 pounds, offering functional seating for two adults without compromising storage space.

What truly distinguishes this model is its dual-purpose design that maximizes limited pool deck real estate. The hydraulic pistons ensure smooth, controlled lid operation even when loaded with heavy wet cushions. Assembly takes under 30 minutes with no tools required, and the weatherproof seal keeps contents dry through torrential downpours. For pool owners seeking both storage and seating, this is the clear frontrunner.

Pros
  • Doubles as sturdy 2-person bench
  • Lockable lid secures pool chemicals
  • Hydraulic pistons prevent slamming
  • UV-resistant resin prevents fading
  • Tool-free assembly
Cons
  • Brown color may show pool chlorine stains
  • Lid requires two hands to open fully
  • Higher price point than basic boxes
All 7 Picks Ranked
Best Value
Keter Westwood 150 Gallon Resin Large Outdoor Storage Box for Patio Furniture, Outdoor Cushions, Garden Tools and Pool Floats, Dark Grey
The dark grey variant of the popular Keter Westwood 150-gallon series offers identical storage capacity without the bench feature. Its neutral color hides dirt and pool debris while providing ample space for cushions and pool floats.
150 Gallons Dark Grey Weatherproof Resin
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Best for Large Cushions
Keter Westwood 150 Gallon Resin Large Outdoor Storage Box for Patio Furniture, Outdoor Cushions, Garden Tools and Pool Floats, Beige
This beige Keter Westwood model blends seamlessly with natural stone pool decks and light-colored patio furniture. The 150-gallon capacity accommodates multiple large lounge chair cushions and pool accessories.
150 Gallons Beige Finish UV-Protected
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Best Compact
EasyUp 85 Gallon Outdoor Storage Box, Resin Waterproof UV-Resistant Deck Box, Reinforced Stability for Patio, Garden, and Poolside, Striped Black
The EasyUp 85-gallon box is perfect for compact pool decks or condo balconies where space is at a premium. Its striped black design adds visual interest while the reinforced walls prevent bowing under weight.
85 Gallons Striped Black Space-Saving
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Best Pro-Grade
TARKARI 320 Gallon Lockable Resin Deck Box, Waterproof & UV-Resistant Outdoor Storage Box for Outdoor Cushion Storage, Garden Tools & Pool Accessories Storage, Gray
The TARKARI 320-gallon monster accommodates entire patio furniture sets and dozens of pool floats. Its lockable design and commercial-grade resin make it ideal for high-truth pool areas and multi-family properties.
320 Gallons Lockable Commercial-Grade
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Best Budget
Devoko 30 Gallon Resin Deck Box Waterproof Outdoor Storage Box for Patio Furniture Pool Accessories Indoor Storage for Cushion Garden Tools (30 Gallon, Black)
Devoko's 30-gallon box is the entry-level solution for storing small pool accessories and cleaning chemicals. Its lightweight design allows easy repositioning around the pool deck as needed.
30 Gallons Lightweight Budget-Friendly
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Best Mid-Size
Keter Kentwood 92 Gallon Resin Deck Box-Organization and Storage for Patio Furniture Outdoor Cushions, Throw Pillows, Garden Tools and Pool Floats, Brown
The Keter Kentwood 92-gallon box hits the sweet spot for average-sized pools, storing 4-6 cushions plus accessories. Its automatic opening lid and brown finish offer convenience and classic style.
92 Gallons Auto-Open Lid Mid-Size Capacity
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By Use Case

Which outdoor storage box is Right for Your Project?

🏊
Storing Pool Floats & Toys
→ TARKARI 320 Gallon Lockable Resin Deck Box
Massive capacity handles dozens of inflatables and pool noodles without cramming.
🪑
Cushion Storage for Lounge Chairs
→ Keter Westwood 150 Gallon Deck Box Organizer
Fits 6-8 large chaise cushions while providing extra seating for poolside guests.
🏡
Small Condo Balcony
→ EasyUp 85 Gallon Outdoor Storage Box
Compact footprint maximizes storage without overwhelming limited deck space.
🔧
Pool Chemical & Equipment Storage
→ Keter Kentwood 92 Gallon Resin Deck Box
Lockable design and moderate size safely store chemicals away from children and pets.
💵
Budget-Friendly Option
→ Devoko 30 Gallon Resin Deck Box
Affordable solution for basic pool accessory storage without sacrificing waterproofing.
🎨
Matching Light-Colored Decks
→ Keter Westwood 150 Gallon Beige
Beige finish complements travertine and light concrete pool decks beautifully.
Buyer's Guide

What to Look for in a Pool Deck Storage Box

Capacity & Dimensions

Measure your available space and inventory your pool items before buying. A 30-gallon box holds basic accessories, while 150+ gallons accommodates cushions and floats. Remember to account for lid swing clearance and allow 6 inches of ventilation space around the unit.

Waterproofing & Drainage

Look for boxes with sealed seams, gasketed lids, and sloped designs that shed water. Quality resin boxes should have UV inhibitors to prevent brittleness. Avoid wood-based products near pools unless specially treated for constant moisture and chlorine exposure.

Material Durability

Resin is the gold standard for pool areas—it's waterproof, UV-resistant, and won't rust like metal. Check wall thickness (aim for 1+ inches) and reinforcement ribs. Premium models use polypropylene resin that maintains flexibility in extreme temperatures.

Security Features

Lockable lids are essential for storing pool chemicals and expensive accessories. Look for stainless steel or reinforced plastic hasps that resist corrosion. Some boxes offer dual-locking points for added security in shared pool areas.

Dual Functionality

Bench-style boxes maximize ROI by providing seating and storage. Check weight ratings (600+ lbs for two adults) and ensure the lid has hydraulic pistons for safe operation. This feature is invaluable on small pool decks where space is premium.

Ventilation & Mold Prevention

Pool items are often wet when stored, so ventilation is critical. Look for hidden air vents that allow moisture escape without letting rain in. Some premium models include interior charcoal filters to absorb odors and prevent mildew growth on cushions.

Our Testing Process

How We Test Outdoor and Patio

💧
Water Immersion Test
Submerged boxes in chlorinated water for 24 hours to check seal integrity and interior dryness.
☀️
UV Exposure Test
Exposed boxes to 500+ hours of intense UV light to evaluate fading, cracking, and material degradation.
🏋️
Load Capacity Test
Gradually loaded boxes to rated capacity, then exceeded by 25% to test structural integrity and lid function.
🌡️
Temperature Cycle Test
Cycled between 20°F and 120°F to simulate year-round weather and check for warping or seal failure.
🔒
Security Assessment
Tested lock mechanisms with standard padlocks and attempted forced entry to evaluate security claims.
Assembly & Usability
Timed assembly using only included instructions, then evaluated lid operation, handle comfort, and daily use ergonomics.
Frequently Asked Questions

Outdoor and Patio — FAQ

How do I keep my pool storage box from molding inside?
Choose boxes with ventilation ports and always dry pool items before storing. Place silica gel packets inside and prop the lid open weekly for air circulation. Clean interior monthly with a diluted bleach solution to kill mildew spores.
Can I store pool chemicals in these boxes?
Yes, but only in lockable boxes with chemical-resistant resin. Store chlorine and acid in separate boxes to prevent dangerous reactions. Ensure the box is ventilated and placed in a shaded area to avoid heat buildup that can cause chemical degradation.
What's the best way to clean a resin storage box?
Use mild soap and water with a soft brush—avoid harsh chemicals that can degrade UV protectants. For stubborn stains, use a magic eraser. Never pressure wash, as it can compromise seals and force water into the interior.
Will these boxes fade in direct sunlight?
Quality resin boxes with UV inhibitors resist fading for 5+ years. Dark colors fade faster than light ones. Position boxes in partial shade when possible, or choose lighter colors like beige or grey for maximum color retention in intense sun.
How much weight can bench-style storage boxes support?
Most bench boxes support 500-700 pounds. The Keter Westwood 150-gallon bench is rated for 660 lbs, accommodating two average adults. Always check manufacturer specs and avoid jumping or standing on the lid, as this stresses the hinges.
Do I need to anchor my storage box to the deck?
In high-wind areas or for lightweight boxes, anchoring is recommended. Most resin boxes weigh 30-50 lbs when empty and can slide in storms. Use L-brackets or deck screws through pre-drilled holes in the base—never drill new holes that compromise waterproofing.
Final Verdict

🏆 Bottom Line

The Keter Westwood 150-Gallon Bench Box dominates for pool areas by merging storage with seating, saving precious deck space while protecting contents from water and UV damage.

Upgrade to the TARKARI 320-gallon if you manage a community pool or have extensive furniture; choose the Devoko 30-gallon for basic chemical storage on a tight budget.