exterior, exposure 1, exposure 2, interior, and structural 1. Plywood is commonly sold in sheets, 4 by 4 feet, 4 by 8 feet, ...

Some grades of industrial plywood are sanded. Plywood is classified by exposure durability based upon moisture resistance and other factors. There are four classes of exposure durability: exterior, ...

2×4s and a 4×8 sheet of 1/2-inch plywood. You can save a little money by buying exterior grade plywood. But I find its often ...