Modern-Depo 100 Gallon Deck Box Storage Bench w/ Cushion, Gray Review (2026)

What it is

This deck box is built from polypropylene, a rigid weather resistant plastic, rather than resin with a woven look or painted metal. At 100 gallons of interior space and roughly 48 inches long by 21 inches deep by 26 inches tall on the outside, it is sized to swallow a stack of patio cushions, pool floats and towels, or a mix of garden tools and bagged soil. A seat cushion sits on top of the lid, turning the storage box into usable bench seating rather than just a bin to be hidden away, which matters on a balcony or patio where every piece of furniture needs to earn its footprint.

Fit for the job

The gray color and cushion top are meant to let this read as outdoor seating first and storage box second, which suits patios and balconies where a plain plastic tote would look out of place. Polypropylene will not rust, dent or peel the way metal or painted wood can, so it holds up to being left outside through rain and sun without repainting or sealing. The listed dimensions put this solidly in the larger deck box category, so it is a better match for a patio or a mid size balcony than a narrow ledge, since 48 inches of length alone takes up a meaningful stretch of wall or railing space.

Features and specs

The lid uses a hydraulic hinge so it can be opened and closed easily for daily use rather than needing to be propped or lifted fully by hand each time. The cushion on top is not fixed to the lid, it sits as a separate piece that can be removed for cleaning or brought inside during rain, which also means it is not permanently glued or strapped down. The box is described as lockable, meaning the lid has a mechanism built to accept a padlock for securing contents, but the lock itself is not included in the box, so anyone who wants to actually lock it will need to add a small padlock separately.

Build and materials

Polypropylene is a practical choice for outdoor storage because it resists the common failure points of other materials, it will not corrode like steel, it will not splinter or need refinishing like wood, and it holds color better than lower grade plastics under UV exposure. Assembly is described as easy, consistent with a molded plastic box that mainly needs its lid and cushion attached rather than a full frame built from separate panels. Because the cushion detaches, both the box and the cushion can be cleaned separately, wiping down the plastic shell and washing or airing out the cushion cover on its own schedule.

Value and who it should buy

For anyone who wants generous weatherproof storage and a place to sit in a single piece, this box covers both needs without requiring a separate bench purchase, and the plastic build means minimal upkeep compared to wood or metal alternatives. It suits patios, larger balconies and poolside areas where 100 gallons of enclosed space is genuinely useful for cushions, towels or garden supplies. Anyone with a small balcony should measure the roughly 48 by 21 inch footprint against their space first, and buyers who want a ready to use lock should plan to add their own padlock, since one is not included with the box.

Frequently asked questions