The build incorporates an old Walmart organizer, like this Better Homes & Gardens 4-Cube Storage Organizer ... roughly 30 inches wide by 30 inches tall, so you'll need two 8-foot 1x2 boards.
Oftentimes the underside of a deck is an empty space, not tall enough to feature ... intentional and stylistic. These cubbies can revolutionize your outdoor storage game, giving you more space ...