CRL Black 1-1/2" Open Cell Backer Rod - 100 Foot Roll Putty & Accessories TT-S-001543A (COM-NBS) Class A for

TT-S-001543A (COM-NBS) Class A for Silicone Building Sealants

It is ideal for use in situations where joint damage has occurred

To ensure a good sealant bond

UV Resistant – Will not turn yellow from exposure to the sun

Prism™ also works on acidic surfaces

CRL Black 1-1/2" Open Cell Backer Rod - 100 Foot Roll Putty & Accessories TT-S-001543A (COM-NBS) Class A forOpen 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