Glass Block Panel Reinforcing is used in the traditional mortar method of glass block installation to strengthen and reinforce your glass block project. Used in every other course of block, panel reinforcing overlaps with panel anchors to help secure your project to the surrounding perimeter material. The traditional mortar installation method components include panel reinforcing, mortar spacers, expansion foam strips and either panel anchors or vinyl U-shaped perimeter channel. All mortar installation accessories are sold separately.