Tongue & Groove 1-3/4" - 10

This decorative 1-3/4" - 10 tongue & groove siding measures 1.750" thickness, requiring eight-quarter lumber for milling on an industrial moulder. The width can be machined to any desired size within the parameters of the molder or shaper used to cut the pattern. The stylish profile comprises a 15/32" tall by 1/2" wide groove with a 3/32" wide by 1/8" deep chamfer on one edge. The other side consists of a 3/8" tall by 9/16" wide offset tongue with a 3/32" wide by 1/8" deep chamfer on one edge. There is a 3/32" void in the joint area for expansion and contraction of the lumber during seasonal changes in relative humidity. When two pieces of milled lumber are joined, they create a 5/16" wide v-groove with a 1/8" wide channel in the center of the joined boards.