This document gives guidance on the selection of plywood for use in the different use classes as defined in EN 335 1.The guidance given takes into account the natural durability classification for solid timber (see EN 350 2) together with other factors specific for plywood.It does not consider durability against chemico-physical factors, such as weathering, nor does it consider the biological durability of the adhesive.Guidance on precautionary measures for use is also given.