Rubbermaid makes some great lockable waterproof boxes of ... deck underside storage than mere cubby holes are slide-out drawers that can be installed directly into your under-deck structure.

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The Ktaxon Waterproof Deck Box is on sale for only $60, which is 54% off the original $129 price tag. This plastic storage stash has 1,000-plus five-star ratings and Walmart shoppers say it’s ...