CRL 1/4" x 3/8" x 2" Thermoplastic Rubber (TPR) Setting Blocks Finish:Black is designed specifically for the

is designed specifically for the smooth installation of backer rod

1/4" (6 mm)

aiding in identifying the Low-e coated surface

Position panel so edges meet at stud center

CRL 1/4" x 3/8" x 2" Thermoplastic Rubber (TPR) Setting Blocks Finish:Black is designed specifically for theCompatible With Silicone, Butyl, Polyurethane, and Polysulfide Sealants UV Stabilized CRL Thermoplastic Rubber (TPR) Setting Blocks are compatible with almost anything, meaning you can use them in designs calling for the use of modern structural glazing sealants. They are formed of a 90 durometer shore hardness thermoplastic rubber that performs as well as traditional neoprene setting blocks. They are available in the most popular sizes of neoprene