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Weather-resistant does not mean waterproof, and features and ratings vary by model. The manufacturer listings below offer concrete examples, not tested or ranked recommendations; check the exact current model and its instructions before buying.
How to choose a size and style
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List the items you want to store and measure the largest or most awkward one.
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Measure the available deck or patio footprint. Allow for the lid to open and for people to walk around the box.
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Devoko 78 Gallon Deck Box, Waterproof Resin Outdoor Storage Box- Resistant Resin Material: Deck box is made of waterproof resin, with a complementing rattan pattern design, effectively preventing fading and rusting, while also maintaining a fresh appearance even with all-weather use
- Large Storage Space: Deck storage box's exceptionally spacious 78 gallon storage space can hold anything you need, making it the perfect choice for furniture cushions
- Clever Function Design: Patio storage box features handles on both sides for easy mobility. The hydraulic hinge design prevents pinching and ensures safety. It also comes with a lockable lid for added security
- Decorate Your Home: Not only serves as a deck box and storage bench but also serves as an excellent decoration for your home, adding color and vitality to your patio, garden, yard, porch, or even indoors
- Dimension: Internal capacity of 78 gallons, the lid is smooth around the raised part, to ensure no injury
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Compare the items’ measurements with the box’s published interior dimensions. Then check its outside dimensions and capacity. A larger gallon figure does not necessarily mean a better shape or fit.
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Decide whether ventilation, a padlock-compatible latch, an assisted or soft-close lid, or rated seating matters for your use.
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Read the exact model’s instructions, load or seating rating, assembly requirements, and warranty terms before purchase.
Rank #2
Sale
Keter Westwood 150 Gal Outdoor Storage Box for Patio and Pool Accessories- LARGE OUTDOOR STORAGE BOX: Fashionably store your outdoor furniture cushions, pool floats, and more. This outdoor storage bench offers lots of convenient, lockable storage space and has enough room to seat 2 adults.
- VERSATILE DECK BOX: This multipurpose outdoor storage container has a large interior with a 150-gallon storage capacity and gives you extra seating for those big backyard parties or a place to rest after working in your yard.
- DURABLE & ATTRACTIVE RESIN CABINET: This deck storage box is attractive and rugged and is made from strong, durable resin with a wood-plank look. It has an easy-lift mechanism for an effortless open and a quiet close.
- ALL-WEATHER-RESISTANT: The all-weather-resistant materials make this low-maintenance patio storage easy to use and enjoy for years to come. Unlike real wood, the thick exterior resin prevents rusting, peeling, and denting.
- BETTER WITH KETER: We are driven to invent. We create lifestyle solutions for use in and around the home in ways that only we can. We design using sustainable and innovative technologies to create products that enhance people's spaces and elevate their experiences.
Manufacturer-listed models compared
These specifications are from Suncast and Keter manufacturer listings checked on 2026-10-04. Ratings and warranty terms apply to the named models only and should not be assumed to transfer to another product.
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| Model | Capacity and dimensions | Other listed features |
|---|---|---|
| Suncast 73-gallon Medium Deck Box | 73 gallons; exterior 46 × 23.5 × 22.5 in; interior 44.25 × 20.25 × 20.25 in | Manufacturer describes it as water-resistant and UV-protected; padlock-compatible; lid seat capacity 300 lb |
| Suncast 99-gallon Large Deck Box, DB9200WD | 99 gallons; exterior 50 × 25.5 × 25.5 in; interior 47.5 × 22.25 × 22.5 in | Padlock-compatible; tool-free assembly; lid seat capacity 300 lb; five-year limited warranty |
| Keter Signature 100-gallon, item 259805 | 100 gallons; exterior 48.4 × 24 × 27.8 in; interior 44.8 × 20.8 × 25.1 in | Ventilation; metal latch for a separately purchased padlock; easy-lift, soft-close mechanism; published 660-lb loading capacity |
| Keter Signature 135-gallon, item 273300 | 135 gallons; exterior 57 × 28.7 × 25 in; interior 54 × 26 × 22 in | Steel-reinforced resin; assisted lid with pistons; lockable metal latch; published 770-lb loading capacity |
| Suncast 200-gallon Extra Large, BMDB200ZP | 200 gallons; exterior 57.5 × 31.5 × 32.75 in; interior 54 × 27.5 × 30 in | Multi-wall resin; soft-close hinges; padlockable metal hasp; ten-year limited warranty |
Suncast describes the 300-lb figure for its cited 73- and 99-gallon boxes as lid seat capacity. Keter lists 660-lb and 770-lb loading capacities for the cited 100- and 135-gallon models. These are manufacturer-specific ratings and their wording is not interchangeable. Follow the exact model’s instructions and do not infer a seating rating from a loading rating.
Weather resistance, ventilation, and contents
Do not treat a resin deck box as waterproof. Keter says its boxes are intended to handle rain and snow but not submersion. Suncast’s instruction sheet describes a resin wicker box as water-resistant, not waterproof. Close the lid correctly, and use sealed bags or containers for moisture-sensitive items; neither claim guarantees dry contents in every storm.
Rank #3
- Light & Solid: Made of a high density resin material, it is stable, waterproof and UV resistant. The net weight of this deck box is only 8.8 pounds
- Extra Seat: It can be used as an extra seat with a maximum load capacity of 220 pounds and can easily carry an adult. The 20-inch height is especially friendly, and an extra bump around it makes it more like a seat
- Moved and Locked: With built-in armrest, water and UV protection features allow you to transport it anywhere without fear of damage; And can be locked, to ensure the safety of items in the box to prevent the entry of reptiles
- Easy to Install: The product comes with instructions for fitting six side panels together in five minutes to create a new 30-gallon resin deck box
- Dimension: Internal capacity of 30 gallons, size is 22*16*20", the lid is smooth around the raised part, to ensure no injury, the raised height is 1"
Consider what you store and how the box handles ventilation. Keter advises against storing firewood in a deck box because trapped moisture can contribute to mold, and recommends a dedicated ventilated structure. Keter also says sealed pool-chemical containers may be stored, but should be kept separate from organic materials and tightly closed to limit corrosive fumes. Follow the product labels and the box manufacturer’s instructions.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Check the exact model’s features and ownership terms
Compare the features that matter for your space and routine: ventilation, whether the latch accepts a padlock, whether a lock is included, lid assistance or soft-close action, and any stated seating or loading rating. A padlock-compatible hasp is not the same as a lock supplied with the box.
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Assembly instructions and warranty coverage also differ. For example, Suncast lists tool-free assembly and a five-year limited warranty for its cited 99-gallon model, and a ten-year limited warranty for its cited 200-gallon model. Check the terms for the exact model and seller listing rather than assuming those details apply across a brand’s range.
Rank #4
- Chic Design: This all-weather wicker plastic storage box with modern rattan pattern design, which is a great decoration for deck, garden, yard, porch and poolside
- Large Storage Space: This deck box has a storage capacity of 100 Gallon with inner dimensions: 47.8"L x 21.4"W x 24.6"H. It will provide enough room to store all your belongings for indoors and outdoors, such as pillows, tools and equipments
- Strong and Resistant: Made of weather-resistant and waterproof poly resin that prevent fading, rusting, peeling and bending, which can keeps looking new for long time using
- Extra Bench Seating: This storage box provides two comfortable seatings( weight capacity of 500 lbs), which can be used as a bench in your home. With two side handles, you can easily to move arround
- Functional Design: Equipped with two gas rods for easy opening and slowly closing, and prevents hands from getting clamped. Lockable lid will keep your belongings safe and secure
Frequently asked questions
Are resin deck boxes waterproof?
No. Keter says its boxes are weather-resistant and not intended to be submerged; Suncast describes its cited resin wicker box as water-resistant, not waterproof. Use sealed bags or containers for items that need extra protection, and follow the model’s instructions.
Can I use a deck box as extra seating?
Only if the manufacturer provides a seating rating for the exact model. Suncast lists a 300-lb lid seat capacity for its cited 73- and 99-gallon models. Other products may list a loading capacity instead, which is not necessarily a seating rating.
How do I know whether a box will fit my cushions?
Measure the largest cushion and compare it with the model’s published interior dimensions, not just its gallon capacity. Also check the outside footprint and make sure the lid can open in the space you have.
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Can I store firewood in a resin deck box?
Keter advises against it, explaining that a box can trap wood moisture and contribute to mold. Keter recommends a dedicated ventilated structure for firewood.
Can I store pool chemicals in a deck box?
Keter says sealed pool-chemical containers may be stored, but should be kept separate from organic materials and tightly closed to limit corrosive fumes. Follow the chemical labels and the box manufacturer’s instructions.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
