Best Deck Box for Cushions: Sizes, Resin vs Wicker, Capacity

The best deck box for cushions for most patios is the Keter Marvel Plus 71 Gallon for a standard dining set, and the Suncast 99 Gallon Large Deck Box or Keter Westwood 150 Gallon when you have a sectional or more than six deep cushions. If you want the lowest cost per gallon, the Devoko 78 Gallon Deck Box is the budget pick. Capacity, not looks, decides whether your cushions actually fit, so this guide starts with the math and then covers resin versus wicker, lids, locks and ventilation.

This guide is research-based. We compared listing details, maker specifications and independent advice on outdoor storage, and we did not personally use these boxes. Waterproof claims describe design intent, not a guarantee in every storm, and cushions should still be dry when you store them.

Decksplore 400 Gallon Outdoor Storage Box, Extra Large Heavy-Duty Resin Deck Box with, Waterproof Lockable All-Weather Storage Container for Cushions, Garden Tools, Sports Equipment, Reinforced Black

Chosen because it specifies Extra Large Heavy-Duty Resin Deck Box with and Garden Tools.

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Decksplore 400 Gallon Outdoor Storage Box, Extra Large Heavy-Duty Resin Deck Box with, Waterproof Lockable All-Weather Storage Container for Cushions, Garden Tools & Sports Equipment, Reinforced Gray

Chosen because it specifies Extra Large Heavy-Duty Resin Deck Box with and Garden Tools & Sports Equipment.

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DRATO 160 Gallon Waterproof Deck Box Outdoor Storage Box with Wheels, Black | Resin Outdoor Storage Bin with Hydraulic Rod for Patio Yard Cushions Tools, Weather-Resistant & UV Resistant, Easy Assembly

Chosen because it specifies Black and Weather-Resistant & UV Resistant.

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Devoko 100 Gallon Deck Box Waterproof Outdoor Storage Box with Cushion | 110 External Gallons Resin Large Outdoor Storage Bench Cabinet Lockable for Outside, Patio Furniture, Garden Tools

Chosen because it specifies Patio Furniture and Garden Tools.

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Top Picks at a Glance

• Best Overall: Keter Marvel Plus 71 Gallon Resin Deck Box
• Best Budget: Devoko 78 Gallon Waterproof Resin Deck Box
• Best Wicker Look: Suncast 99 Gallon Large Deck Box, resin wicker
• Best for Big Sectionals: Keter Westwood 150 Gallon Storage Box
• Best Extra-Large Option: LIFETIME 60012 Extra Large Deck Box, 130 Gallon
• Best Wicker Bench: VINGLI 132 Gallon Outdoor Wicker Storage Box
• Best Compact Pick: Keter City 30 Gallon Storage Box and Patio Side Table

Comparison Table

First, Do the Capacity Math

Deck box sizes are given in gallons, which is a poor way to think about cushions. Convert it. One US gallon is about 231 cubic inches. A 24 x 24 x 4 inch seat cushion is 2,304 cubic inches, or about 10 gallons. A 24 x 24 x 5.75 inch deep seat cushion is about 14 gallons. A 19 x 19 x 3 inch dining pad is about 4.7 gallons.

So four deep seat cushions need about 56 gallons of pure volume, and six need about 84 gallons. Real boxes lose space to rounded corners, ribs and the lid, and cushions are not perfect rectangles, so add roughly 25 to 30 percent. That puts four deep cushions in a 71 to 78 gallon box, and six in a 99 to 130 gallon box. A full sectional with back cushions usually pushes you toward 130 to 150 gallons. Back cushions are the trap: a pair of 24 x 24 inch back cushions at 6 inches thick takes 15 gallons each.

Nominal gallon figures are also not interior dimensions. Always check the inside length, width and height on the maker’s page. A cushion that is 28 inches long will not fit in a box that is 26 inches wide inside, no matter how many gallons it claims. Some listings state external gallons separately, so make sure you compare the same number.

1. Keter Marvel Plus 71 Gallon Resin Deck Box: Best Overall

• 71 gallon capacity
• Resin construction for patio and cushion storage
• Designed for outdoor cushions and throw pillows per the listing
• Weight and interior dimensions: not listed in the title

Best for: a four to six chair dining set with standard or modest-depth cushions. Skip if: you have deep seat cushions with back pieces; the box will fill quickly.

The 71 gallon size is a sweet spot because it fits cushions for many small and medium patios without dominating the space. At roughly the volume of 15 to 18 dining pads, it takes a full set for a four-seat table with room for pillows. Resin construction is a sensible default for deck boxes, because the material does not rust or rot, and it usually costs less than wood. Keter is a long-established maker of resin storage, which counts for something when you are shopping for a box that will live outdoors for years.

In practice, a deck box like this is also a seat or a stage for potted plants, so check the load rating on the maker page before sitting on it. The lid should close fully without bulging, which is a sign you have overfilled it, and a closed lid is what keeps rain out.

Pros:

• Fits a typical dining set of cushions
• Resin does not rust
• Budget-to-mid pricing
• Established maker

Cons:

• Too small for sectionals
• Lock details not listed

2. Devoko 78 Gallon Waterproof Resin Deck Box: Best Budget

• 78 gallon capacity
• Waterproof resin outdoor storage box
• Lockable per listing, doubles as a storage bench
• Larger sizes in the same line: 100 and 120 gallons

Best for: shoppers who want the most gallons for the least money. Skip if: you want a branded warranty or a very rigid, heavy-duty build.

Devoko sells a ladder of sizes, from 30 gallons up to 120, so you can scale the choice to your cushion count without switching brands. A 78 gallon box suits a set of six dining cushions or four deep seat cushions with space to spare. Lockable lids give some protection from casual theft and also keep the lid shut in wind, though a lock will not stop a determined thief.

Budget boxes tend to use thinner walls than premium ones. That is acceptable for storing cushions, which are light, but less so if you plan to sit on the box often. Check the stated weight capacity if the listing provides one, and put a seat pad on top for comfort.

Pros:

• Lowest cost per gallon of our picks
• Multiple sizes in the same line
• Lockable lid per listing

Cons:

• Thinner build likely at this tier
• Weight capacity not listed here

3. Suncast 99 Gallon Large Deck Box: Best Wicker Look

• 99 gallon capacity
• Resin wicker texture, all-weather
• Made in USA per listing
• Smaller 73 gallon medium size also available

Best for: patios where the box sits in plain view next to wicker furniture. Skip if: price per gallon is your main concern.

Resin wicker is molded plastic made to look like woven rattan. It has the look of a natural wicker box without the maintenance, since there is nothing to rot or unravel. For cushion storage, the 99 gallon size handles about six deep cushions, and the 73 gallon medium model suits a dining set. The wicker pattern helps hide scratches and dust, which keeps it looking tidy longer than a smooth finish.

The premium tier here reflects the brand and the finish, not extra waterproofing. All resin boxes keep out rain by design, but none of them is a sealed container, and a box left in full sun can heat up inside, so avoid storing wet cushions in it.

Pros:

• Wicker styling without upkeep
• Large capacity
• Made in USA per listing

Cons:

• Costs more per gallon
• Heavy to move when full

4. Keter Westwood 150 Gallon Storage Box: Best for Big Sectionals

• 150 gallon capacity
• Resin, waterproof and lockable per listing
• Piston-assisted lid per the product name
• Available in brown and dark grey

Best for: sectionals, large dining sets and families who store pool gear and cushions together. Skip if: you have a small balcony, since this is a big box.

At 150 gallons, this holds a full sectional set: four to six deep seat cushions plus back pillows. The piston-assisted lid is the feature to notice, because a heavy lid on a big box is a pain and a safety issue. Pistons hold the lid open while you load cushions and reduce the chance of the lid dropping on your hand.

Measure the space before buying. Big boxes need a flat, stable base and enough clearance to open the lid fully, usually a foot or more behind them. Placing the box on a level surface also keeps the lid aligned, which keeps the seal tight.

Pros:

• Very large capacity
• Piston lid for easier loading
• Lockable per listing

Cons:

• High cost
• Large footprint

5. LIFETIME 60012 Extra Large Deck Box, 130 Gallon: Best Extra-Large Option

• 130 gallon capacity
• Extra large deck box
• Desert sand or brown finish
• Construction details: not listed in the title

Best for: households that want a large box from a brand known for outdoor storage and furniture. Skip if: you need a lock and the listing does not show one; check the maker page first.

The 130 gallon size sits between the Suncast 99 and the Keter 150, which makes it a good fit for six to eight deep cushions. Neutral desert sand blends in with decks and wood fences. Because several details are not stated in the title, read the maker’s specifications for weight capacity, lid type and drainage before ordering.

Pros:

• Large capacity in a neutral color
• Established outdoor brand

Cons:

• Premium tier
• Several specs not listed in the title

6. VINGLI 132 Gallon Outdoor Wicker Storage Box: Best Wicker Bench

• 132 gallon capacity
• Rattan-style wicker deck box and storage bench
• Suitable for patio, pool and balcony per listing

Best for: homeowners who want extra seating along with cushion storage. Skip if: you want a rigid, seat-rated bench without checking the weight limit.

Wicker-style boxes like this often use a metal frame with a woven resin skin and sometimes a liner bag inside. A liner helps keep cushions off the wicker, but it is not always waterproof, so confirm what the listing says. These boxes are lighter than solid resin, which makes them easy to move but also means the lid and walls flex more under load. Test the lid before loading it with heavy items.

Pros:

• Big capacity with a decorative look
• Doubles as seating
• Mid-range cost for the size

Cons:

• Lighter walls than solid resin
• Liner and lid details not listed

7. Keter City 30 Gallon Storage Box and Patio Side Table: Best Compact Pick

• 30 gallon capacity
• Resin, waterproof and lockable per listing
• Works as a side table
• Available in grey or brown

Best for: small balconies and bistro sets with two or three thin cushions. Skip if: you need to store more than four cushions.

A 30 gallon box holds about six 19 x 19 x 3 inch pads at best, which is enough for a two-chair balcony set. It earns its place by doubling as a side table, so you do not give up floor space. For a small space this is the practical alternative to carrying cushions inside after each use.

Pros:

• Compact and multi-use
• Budget tier
• Lockable per listing

Cons:

• Small capacity
• Not suited to deep cushions

Also Consider

• Keter Kentwood 92 Gallon Outdoor Storage Box: A mid-size resin box for patio and pool accessories, available in grey or brown. A good step up from the 71 gallon Marvel Plus.
• Flamaker 80 Gallon Outdoor Storage Box: A wood-texture resin deck box at a budget tier. Check the lock and lid fit.
• Devoko 100 Gallon Waterproof Deck Box: A larger box in the same budget line as the Devoko 78, for six to eight cushions.
• Bicherub Water-Resistant Zippered Cushion Storage Bag: A 68 inch storage bag that suits indoor storage in a garage or shed, not a replacement for an outdoor box.

How We Chose

We built this list from listing details, manufacturer specifications and independent guidance on outdoor storage. We did not personally use these boxes. Each pick needed to be a real, currently sold product in the store catalog, with no more than two products per brand where possible. We looked at capacity, material, lid and lock design, and the intended use. When the listing did not say something, we marked it not listed. We have not quoted prices, only tiers, because prices change.

Buying Guide

Resin versus wicker

Molded resin is the default choice. It is rust-proof, rot-proof, and usually has thicker walls than a wicker box. Resin boxes tend to have tighter lids and sometimes drainage or ventilation holes. Wicker-style boxes use a woven resin skin over a frame and are chosen for appearance. They suit patios with wicker furniture, but check whether they come with a liner and whether the lid sits flush. If cushion protection is your priority, resin is the safer pick, and if looks matter more, wicker is a reasonable compromise.

Lids, locks and seals

A lid with an overhanging lip sheds rain better than a flat lid. Piston or gas-strut lids hold themselves open, which matters for larger boxes. Locks are usually a padlock hasp that you supply yourself, so budget for a padlock. A lock deters casual theft but does not turn the box into a safe. If you live in a windy area, a locked lid also stops gusts from flipping the lid.

Ventilation and mildew

Waterproof and airtight are different things. A fully sealed box traps moisture and can cause mildew, especially if the cushions went in slightly damp. Prefer a box with a small vent or with a gap that lets air move, and always store cushions dry. Dropping a mildew-resistant desiccant bag or a few silica gel packs in the box helps in humid climates. If you find a musty smell, take the cushions out and air them in sun before returning them.

Size, weight and placement

Large boxes are heavy even when empty. A 150 gallon unit can weigh 40 pounds or more empty, and a lot more when loaded, so place it where you want it before filling it. Look for wheels if you need to move it. Keep the box on level ground: a tilted box warps the lid over time. Leave a gap behind the box so the lid can open fully, and keep it a few inches off walls to allow air to circulate.

Seating and load limits

Many deck boxes double as benches, but the load limit varies widely, and not all of them are rated for sitting. If you plan to sit on the box, look for a stated weight capacity, and avoid standing on the lid. For heavy use, a resin box with a flat reinforced lid is a better bet than a wicker box.

Which Size for Which Patio: A Quick Decision Matrix

Ownership Realities: What Wears First

On most deck boxes the first parts to wear are the lid hinges, the lid seal edge and the lock hasp, not the main body. Sun exposure makes cheaper resin brittle over several years, so a box in full sun may crack at the corners sooner than one in partial shade. Clean the lid channel each season, because debris trapped there prevents the lid from closing flat and lets water in.

Think about assembly too. Many large boxes ship flat in a heavy carton and need two people to assemble, and some need a drill for the hinge screws. Plan an hour for a big unit, and keep the screws in a small container as you work. If you are replacing an older box, check your doorway and gate widths before delivery, since a 150 gallon box can be wider than a standard gate when fully assembled.

Common Mistakes to Avoid

• Buying by gallons without checking the inside dimensions
• Forgetting that back cushions take far more room than seat pads
• Storing damp cushions and expecting the box to fix it
• Placing the box on sloping ground
• Assuming a lock makes the box a secure vault

Frequently Asked Questions

What is the best deck box for cushions?

The best deck box for cushions is the one with enough capacity for your set, and for a standard dining set the Keter Marvel Plus 71 Gallon is a strong choice. For sectionals, choose a box of 130 to 150 gallons. Always check interior dimensions, not just gallons.

What size deck box do I need for patio cushions?

Multiply the cushion volume, add 25 to 30 percent, and compare it with the box capacity. A 24 x 24 x 4 inch cushion is about 10 gallons, so four of them fit in a 71 to 78 gallon box. Back cushions take more room, so size up if you have them.

Is a resin or wicker deck box better for storing cushions?

Resin is usually better for storage, because it is sturdy and has a tighter lid. Wicker-style boxes look more decorative and can work well, especially with a liner. Choose based on whether you value protection or appearance more.

Are deck boxes really waterproof?

Most are water-resistant by design, meaning they shed rain, but few are fully sealed. Heavy rain, standing water and a poorly fitting lid can let moisture in. Treat waterproof as a helpful feature, not a guarantee, and store cushions dry.

Can I sit on a deck box?

Some boxes are designed as benches, and some are not. Check the listing for a stated weight capacity. If none is given, assume the lid is not meant to carry people, and use a separate bench.

How do I stop my cushions from getting musty in a deck box?

Let cushions dry fully before storing them, leave the box in a shaded spot with a bit of airflow, and add a moisture absorber. If the box has no ventilation, open the lid on dry days to air it out. Wash covers per the care label before long storage.

Do I need a lock on my deck box?

A lock is optional. It deters casual theft and keeps the lid from lifting in wind. If you want one, check that the box has a hasp, and bring your own padlock.

Which One Should You Buy?

If you have a four to six chair dining set, the Keter Marvel Plus 71 Gallon is the simplest pick, and the Devoko 78 Gallon is the budget alternative. For wicker styling and larger sets, look at the Suncast 99 Gallon or the VINGLI 132 Gallon. For sectionals, go to the Keter Westwood 150 Gallon or the LIFETIME 130 Gallon. A small balcony is well served by the Keter City 30 Gallon. Whichever you choose, do the cushion volume math first, store only dry cushions, and give the box a level spot with some airflow.

Sources

• Keter product pages and specification sheets
• Suncast product pages
• Devoko and VINGLI product listings
• LIFETIME product pages
• Consumer publications on outdoor furniture care and storage

Last updated: October 2026