For a standard size, consider planters that are 18 inches square and benches that ... to form a square box and join them using screws. Pre-drill holes to prevent the wood from splitting.
If your backyard lacks sufficient seating, there's no need to go splurging on brand-new chairs, weatherproof sofas, or ...
the waterproof storage box prevents rusting, peeling and denting, lasting longer than wood. Built-in reinforcing rods can prevent deformation after being exposed to the sun ...