4 In. Thick Series Silicone System Glass Block Anchors (5-Pack)
Horizontal spacer, an 8 in. vertical spacer and either an anchor and expansion strip or a 4 in. Spacers are positioned between each glass block and held in place with REDI2BOND glass block silicone.
4 In. Thick Series 7.25 In. Veritcal Silicone System Glass Block Spacers (10-Pac
Thick Series 7.25 In. horizontal spacer, an 8 in. vertical spacer and either an anchor and expansion strip or a 4 in. Spacers are positioned between each glass block and held in place with REDI2BOND glass block silicone.