Asphalt felt #15 and #30 15# ASTM D4869/D226,36''X144' 30# ASTM D4869/D226,36''X72' Asphalt felt #15 and #30 15# ASTM D4869,36''X144' 15# ASTM D226,36''X144' 30# ASTM D4869,36''X72' 30# ASTM D226,36''X72' Asphalt felt #15 and #30 DescriptionWidthlengthWeightThicknessUsageASTM D-226 roofing felt 30#36in0.914m72ft21.95 m23.5kg1.2mmA roofing felt used as an underlay beneath asphalt shingles, wood ...