CRL Black 7/8" Open Cell Backer Rod - 100 Foot Roll Finish:Black S1L2100 Primer may be required

S1L2100 Primer may be required for these and other substrates as well

Tremco®: Butyl Sealant

Rigid Polyurethane)

trouble-free product

Virtually Eliminates Bowing of Window Frames

CRL Black 7/8" Open Cell Backer Rod - 100 Foot Roll Finish:Black S1L2100 Primer may be requiredOpen Cell, No Skin, Non Gassing Rod is Compatible With All Cold Applied Sealants Controls Depth of Sealant and Acts as a Bond Breaker Soft, Compresses Easily CRL Open Cell Backer Rod is a soft, round, and easily compressible open cell polyurethane foam. Open Cell Backer Rod is not adversely affected by dynamic joint movement, and its inherent flexibility applies itself to joint variations very easily. It is ideal for use in situations where joint