APOC® 22 #30 Felt Asphalt Saturated Roof Underlayment Check Valve Handle Material : Non-Slip Cushion

Handle Material : Non-Slip Cushion Grip

Seals liquid foods quickly & consistently

(4) Mandrels

as well as impervious porcelain

of sustained clamping force

APOC® 22 #30 Felt Asphalt Saturated Roof Underlayment Check Valve Handle Material : Non-Slip CushionProtection Against Moisture Entry Breathable Membrane Allows the Transmission of Air Vapor while Keeping Water Out Superior Asphalt Saturation for Improved Waterproofing Use Under Roof Shingles, Tile & Other Primary Coverings Meets ASTM D4869 APOC organic felts are engineered with True Breathe Technology, keeping rain and water on the outside of your home while allowing water vapor from cooking, cleaning, bathing and other sources to escape home