CRL 1/4" Closed Cell Backer Rod - 100' Roll Finish:Gray It solves difficult assembly and

It solves difficult assembly and positioning problems

Not recommended for surfaces with special protective or cosmetic coatings such as mirrors

877 is a special low-solvent formulation that is made to be compatible with Super Spacer's adsorbent

High Quality Insulating Glass Units

CRL 1/4" Closed Cell Backer Rod - 100' Roll Finish:Gray It solves difficult assembly andAllows Easy Control of Sealant Application Thickness Won't Adhere to Sealants; No Bond Breaker Needed Compatible with All Cold Applied Sealants CRL Closed Cell Backer Rod is a round, flexible, closed cell polyethylene foam with an exterior "skin" used as a backing and thickness control device for elastomeric and other cold applied sealants. The Backer Rod becomes an integral part of the joint into which it is installed, and therefore is available in a