Sheds and Storage
Best Deck Boxes (2026): 120 to 230 Gallon and Vertical Storage
Quick answer
The best deck box for most patios is the Keter Luma 230 Gallon: about 31 cu. ft. behind a soft-close hydraulic lid on a steel-reinforced frame, enough for the seat and back cushions of a six to eight seat set. For a box that doubles as a bench, the Keter Denali 150 lid seats 600 lb.
A deck box is a lidded resin storage chest that keeps cushions, garden tools and patio gear out of sun and rain. Size is everything: one gallon is about 0.134 cu. ft., so a 150 gallon box holds roughly 20 cu. ft. and a 230 gallon box about 31 cu. ft. The best overall pick is the Keter Luma 230 Gallon Deck Box ($279.99), the largest box we track, with a steel-reinforced frame and hydraulic lid. If you need to store a push mower, bags of soil or long-handled tools, skip the box and step up to a Suncast XL Vertical Storage Shed ($526.49), which holds 106 cu. ft. in a footprint that fits against a fence.
Picks are based on published capacity, interior dimensions, lid mechanisms, seat ratings and recurring owner-review themes about leaks, lids and wind. Use the cushion chart below to match box size to your furniture, and see best patio furniture sets if you are buying the set too.
On this page
- What is the best deck box for patio cushions?
- What size deck box do I need for cushions?
- Are deck boxes waterproof?
- Beginner pick: affordable 120 to 150 gallon deck boxes
- Intermediate pick: sturdier boxes and hidden hose storage
- Expert pick: the biggest deck box and small storage sheds
- How do the deck box picks compare on specs?
- Deck box, vertical shed or horizontal shed: which do I need?
- How do I keep cushions dry and mildew free in a deck box?
What is the best deck box for patio cushions?
For cushions, you want enough volume to store them without crushing, a lid that sheds water, and a hinge that will not slam on fingers. Our picks:
- Best overall: Keter Luma 230 Gallon. Rattan-look resin, steel-reinforced frame and hydraulic pistons for controlled opening and closing.
- Best bench seat: Keter Denali 150 Gallon. Double-wall 20 mm panels that can be painted or drilled, a 56.2 x 25 x 25.1 in. interior and a lid rated for 600 lb of seating.
- Best for rainy climates: Lifetime 130 Gallon Heavy Duty. Dual-wall HDPE with UV-protected panels, a water-resistant seal and a controlled spring hinge that opens past 90 degrees without slamming.
- Best budget: Keter Westwood 150 Gallon. Wood-plank-look resin, 150 gallons, lockable, and room to seat two adults.
- Best split lid: Suncast XL 120 Gallon. UV-resistant resin with spring-assisted split lids, so you can open one side without clearing the whole top.
Deck boxes are water resistant, not waterproof. Owners commonly report some moisture inside after wind-driven rain or when a box sits in a puddle, which is why placement and airflow matter as much as the brand.
What size deck box do I need for cushions?
Convert gallons to cubic feet (multiply by 0.134), subtract about 15 percent for wasted space between cushions, then divide by cushion volume. A deep seating seat and back pair is roughly 3 cu. ft., a chaise cushion folded is roughly 2.75 cu. ft., and a thin dining chair pad is under half a cubic foot.
| Box size | Cubic feet | Deep seating sets (seat plus back) | Chaise cushions (folded) | Dining chair pads | Catalog example |
|---|---|---|---|---|---|
| 120 gal | 16.0 cu ft | 4 | 4 | 30 or more | Suncast XL 120 |
| 130 gal | 17.4 cu ft | 4 to 5 | 5 | 30 or more | Lifetime 130 Heavy Duty |
| 150 gal | 20.1 cu ft | 5 | 6 | 35 or more | Keter Westwood 150, Keter Denali 150 |
| 230 gal | 30.8 cu ft | 8 | 9 | 50 or more | Keter Luma 230 |
| 98 cu ft horizontal shed | 98 cu ft (about 733 gal) | About 27 | About 30 | Not the right use | Suncast Glidetop 98 |
| 106 cu ft vertical shed | 106 cu ft (about 793 gal) | About 30 | About 32 | Not the right use | Suncast XL Vertical 106 |
Estimates assume typical cushion sizes: 24 x 24 x 5 in. seat plus 24 x 20 x 5 in. back, 72 x 22 x 3 in. chaise, and 20 x 20 x 2 in. dining pad, with 15 percent lost to packing. Measure your own cushions and check interior length: a 72 in. chaise cushion must fold to fit a box with a 56 to 57 in. interior.
Are deck boxes waterproof?
No deck box is truly waterproof. They are built to shed rain from the top, and the better ones add features that keep the interior drier: the Lifetime 130 lists a water-resistant seal, and the double-wall panels on the Keter Denali resist warping that opens gaps. Water usually gets in three ways: wind-driven rain past the lid edge, water wicking up from standing puddles under the box, and condensation when damp cushions are closed in on a warm day.
The fixes are simple. Set the box on a slightly raised, level surface such as pavers so the floor stays out of puddles. Place it under a roof overhang but out of the path of gutter overflow or a downspout. Let cushions dry fully before storing, and drop a DampRid moisture absorber inside during long humid stretches. For anything that truly cannot get damp, such as electronics or paper, use the garage or a storage shed instead.
Beginner pick: affordable 120 to 150 gallon deck boxes
For a small lounge set, a few dining chair pads or pool-free patio toys and towels, a 120 to 150 gallon box is plenty, and these are the value picks.
Keter Westwood 150 Gallon Deck Box
$159.99A wood-plank-look resin box with 150 gallons of lockable storage, an easy-lift mechanism for a quiet close, and a lid sturdy enough to seat two adults. Thick resin will not rust, peel or dent like real wood.
Best for: patio cushion storage at an entry price
Check price on Amazon
Suncast XL 120 Gallon Resin Deck Box
$199.99A 120 gallon UV-resistant resin box with pad-lockable, spring-assisted split lids that stay open and are strong enough to sit on. The split design is handy when the box sits against a wall or under a window.
Best for: towels and supplies with split-lid access
Check price on AmazonIntermediate pick: sturdier boxes and hidden hose storage
For a patio used most days, spend a little more on stiffer walls, controlled lids and a box that works as seating, and tidy the hose while you are at it.
Keter Denali 150 Gallon Deck Box
$265.13Double-wall 20 mm polypropylene panels with a wood-look texture that can be painted or drilled, hydraulic pistons that close slowly with no smashed fingers, and a lid rated for 600 lb of seating.
Best for: a deck box that doubles as a sturdy bench
Check price on Amazon
Lifetime 130 Gallon Heavy Duty Deck Box
$178.99Rigid dual-wall HDPE with UV-protected panels, a water-resistant seal, molded handles and a controlled spring hinge. Interior is 4 ft 9 in. x 1 ft 8.7 in. x 1 ft 11.7 in.
Best for: keeping cushions dry in a rainy climate
Check price on Amazon
Suncast Smart Trak Hose Reel Hideaway (225 ft.)
$114.99A made-in-USA wicker-look resin hose box that holds 225 ft of hose, with a Smart Trak guide for kink-free winding and a watertight connection, in a 21 x 22 x 21.5 in. footprint.
Best for: hiding a long garden hose next to the spigot
Check price on AmazonExpert pick: the biggest deck box and small storage sheds
For large sectionals, or when you are really storing a mower and tools rather than cushions, go big or go vertical.
Keter Luma 230 Gallon Deck Box
$279.99At 230 gallons, about 31 cu. ft., it holds the seat and back cushions of a six to eight seat set. The steel-reinforced frame adds stiffness that large resin boxes need, and the hydraulic lid opens smoothly.
Best for: cushions for a full sectional or large dining set
Check price on Amazon
Suncast XL Vertical Storage Shed (106 cu. ft.)
$526.49A made-in-USA 106 cu. ft. multi-wall resin unit measuring 70.5 x 44.25 x 77.5 in., with a floor, pad-lockable double doors and upper and lower metal latches. Suncast lists it as big enough for a push mower.
Best for: long-handled tools and a push mower against a fence
Check price on Amazon
Suncast Glidetop Horizontal Storage Shed (98 cu. ft.)
$624.99A 98 cu. ft. horizontal shed with a sliding lid, a reinforced resin floor and a pad-lockable three-door system. It stays below most window lines while holding trash cans, bikes or a mower.
Best for: trash cans or a mower under a window line
Check price on AmazonWho should not buy this tier: Skip the large units if your deck or balcony has a weight limit, since a loaded 230 gallon box or a 106 cu. ft. shed full of gear gets heavy. Skip them if you need true weatherproof storage for electronics, paper or fabric that must stay bone dry. And if you are storing a riding mower, a snow blower and a wheelbarrow, none of these is big enough; size a real shed with the shed size calculator.
How do the deck box picks compare on specs?
| Model | Price | Capacity | Width | Depth | Height | Material | Floor included |
|---|---|---|---|---|---|---|---|
| Keter Luma 230 Gallon Deck Box | $279.99 | 230 gal | - | - | - | resin, steel reinforced | - |
| Keter Denali 150 Gallon Deck Box | $265.13 | 150 gal | 5 ft | 2.4 ft | 2.3 ft | double wall polypropylene resin | - |
| Keter Westwood 150 Gallon Deck Box | $159.99 | 150 gal | - | - | - | resin | - |
| Lifetime 130 Gallon Heavy Duty Deck Box | $178.99 | 130 gal | 5 ft | 2 ft | 2.2 ft | dual wall HDPE | - |
| Suncast XL 120 Gallon Resin Deck Box | $199.99 | 120 gal | - | - | - | resin | - |
| Suncast XL Vertical Storage Shed (106 cu. ft.) | $526.49 | - | 5.9 ft | 3.7 ft | 6.5 ft | multi wall resin | Yes |
| Suncast Glidetop Horizontal Storage Shed (98 cu. ft.) | $624.99 | - | - | - | - | multi wall resin | Yes |
Deck box, vertical shed or horizontal shed: which do I need?
The three types solve different problems. Pick by what you store and where it has to fit.
| Type | Catalog example | Capacity | Footprint | Best for |
|---|---|---|---|---|
| Deck box | Keter Denali 150 | 150 gal (about 20 cu ft) | 59.7 x 28.5 x 27.6 in. exterior | Cushions, towels, toys; doubles as a bench |
| Large deck box | Keter Luma 230 | 230 gal (about 31 cu ft) | Longer and deeper than a 150 gal box | Cushions for a full sectional |
| Horizontal storage shed | Suncast Glidetop 98 | 98 cu ft | Low and wide, below window height | Trash cans, bikes, a push mower |
| Vertical storage shed | Suncast XL Vertical 106 | 106 cu ft | 70.5 x 44.25 x 77.5 in. | Rakes, shovels, trimmers, a push mower |
| Walk-in shed | Lifetime 7 x 7 | Hundreds of cu ft | 7 x 7 ft plus a pad | Mowers, snow blowers, bulk supplies |
How do I keep cushions dry and mildew free in a deck box?
- Dry before storing. Stand cushions on edge in the sun for an hour after rain; closing damp foam in a box is the main cause of mildew.
- Raise the box. Set it on pavers or a level deck surface so the base never sits in water.
- Watch the roofline. Keep boxes out of gutter overflow and downspout splash; see gutter guards if gutters spill.
- Add airflow. Open the lid on dry days now and then, and use a moisture absorber in humid climates.
- Use cushion bags. Breathable storage bags keep dust and insects off between seasons.
- Wash the box yearly. Soap and water on the interior removes the film mildew grows on.
Cushions last longer when they are stored promptly, which is part of any good patio routine. The beginner patio evening setup includes storage alongside seating and lighting.
How we chose
We did not test these products in person. Picks are researched from manufacturer specifications and owner manuals, engine and safety certifications where they apply, warranty terms, public recall records, and the recurring themes in verified owner reviews. We favor established brands with large review counts and parts support, match each pick to a real yard size or task, and place it in the tier where its price and capability actually belong.
Frequently asked questions
What size deck box do I need for patio cushions?
A 120 to 150 gallon box holds the seat and back cushions for about four or five deep seating chairs, while a 230 gallon box holds about eight. One gallon is about 0.134 cu. ft., and a typical deep seating seat and back pair takes about 3 cu. ft. Check interior length too: long chaise cushions around 72 in. usually have to fold to fit a box with a 56 to 57 in. interior.
Do deck boxes keep cushions dry?
Good deck boxes keep cushions mostly dry, but none are fully waterproof. Wind-driven rain, standing water under the box and damp cushions closed inside can all cause moisture. Choose a box with a sealed or overlapping lid, such as the Lifetime 130 with its water-resistant seal, set it on pavers out of puddles and downspout splash, and let cushions dry before storing them.
Can you sit on a deck box?
Many deck boxes are designed to double as seating, but ratings vary. The Keter Denali 150 lists a lid rated for 600 lb, the Keter Westwood 150 seats two adults, and the Suncast XL 120 split lid is rated sturdy enough to seat an adult. Check the specific model before treating a box as a bench, and avoid standing on lids, which are not built for concentrated loads.
Is a vertical storage shed better than a deck box?
A vertical storage shed is better for long-handled tools, a push mower and bulk items because it holds far more, 106 cu. ft. for the Suncast XL Vertical versus about 31 cu. ft. for a 230 gallon deck box, and it stands upright against a fence. A deck box is better for cushions and patio items you want within reach, and it works as extra seating.
How do I stop my deck box from blowing away?
Place it against a wall or railing out of the strongest wind, keep some weight inside, and latch the lid so gusts cannot catch it. On decks, a pair of L-brackets screwed into the deck boards and the box base holds it in place; check that drilling does not void the box warranty first. Large empty resin boxes are light, so storms are when they move.
Researched, not professional advice. This page is compiled from published specifications, manuals, labels and owner-review consensus, not hands-on testing. Follow the manufacturer's instructions and product label, and consult a qualified professional where safety, chemicals, fuel or structures are involved. As an Amazon Associate we earn from qualifying purchases.