A 4×8 raised bed is not one product: current dimensions and soil capacity compared
A 4×8 label tells you the nominal footprint, but it does not tell you the bed height, wall construction, configuration, or published fill capacity. In a current same-footprint sample, published capacity ranges from 28 cubic feet for a 10.5-inch cedar bed to 69 cubic feet for a 26-inch modular metal configuration. That difference matters when