CRL 3/4" Closed Cell Backer Rod - 1100' Case Finish:Gray CRL Open Cell Backer Rod

CRL Open Cell Backer Rod should be used only in vertical and horizontal wall joints

Aggressive

and each set comes in a divided vinyl pouch you can carry in your pocket or tool box

and other typical air seals

This extra fast setting

CRL 3/4" Closed Cell Backer Rod - 1100' Case Finish:Gray CRL Open Cell Backer RodAllows 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