Tongue & Groove 5/8" - 16

This 5/8" - 16 channel tongue & groove paneling measures .625" in thickness; the left vertical cutter head determines the finished width at the milling time. There is a .008" void in the joint area for expansion and contraction to accommodate seasonal changes in relative humidity. When two pieces of milled lumber are merged, they create a 1/8" wide channel/groove on both face sides of the joined boards. The profile consists of a 1/4" tall by 3/8" wide tongue and a 1/4" tall by 1/4" deep groove.