Mortar System Glass Block Spacers for 3 In. or 4 In. Thick Series Block (24-Pack)

These Universal Glass Block Mortar Spacers are used in the traditional mortar method of glass block installation to keep block aligned, stable and the joints consistently even for professional looking results. Universal spacers come in 2-pieces. The pieces quickly and simply snap together to create a spacer that works with either 3 in. or 4 in. glass block. 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.