Tongue & Groove 3/4" - 67

This 3/4" - 67 channel/gap siding measures .750" thickness, enabling the detail to be cut from four-quarter lumber; the width is manufactured to any desired size within the parameters of the machinery used to mill the pattern. The embellished profile comprises a 1/4" wide by 1/4" tall groove with an offset 1/2" wide by 1/4" tall tongue. There is a .006" void in the joint area for expansion and contraction of the wood during seasonal changes in relative humidity. When two pieces of milled lumber are joined together; they create a 1/4" wide by 1/4" deep channel on the face side of the merged boards. We offer another similar profile with a larger tongue that is specifically designed for blind nailing applications for your review and consideration, tongue & groove .750" - 65.