Plywood

Plywood is sold per sheet. A full sheet is 4' x 8', halfsheet is 4'x4' and a quarter sheet is 2'x4'.

Baltic Birch, however, is sized differently. A full sheet of Baltic Birch is 5'x5', a half sheet is 30"x60" (2.5'x5') and a quarter sheet is 30"x30" (2.5'x2.5')