Developed and patented by Robbins in the 1950’s, the Lock-Tite system features the industry’s strongest fastening system- specially milled tongue and groove northern maple fastened with zinc-plated steel channel and a clip fastening system. A recessed groove under the tongue accommodates 16 gauge steel clips to secure the maple to the channels, which are seated into Robbins; Blanketseal foam underlayment for added moisture protection