ducting
johns manville 17740 duct insulation1 1 2in x 24in x 48in
duct insulation board fiberglass material of construction all service jacket jacket material color white thickness 1 1 2 in . approx . r factor 6.8 6 lbs . density 24 in . width 48 in . length temp . range 32 to 450 f unfaced side 32 to 150 f faced side standards astm c612 type ia astm c612 typeib astm c553 type iii hh i 558c hh i 558b astm e 84 nrc 1.36 mil i 24244cul723 nfpa255astm c795 astm c1136 br b features b ul li color white li li item duct insulation li li length 48 li li material of construction fiberglass li li temp . range 32 to 450 f unfaced side 32 to 150 f faced side li li type board li li width 24 li li approx . r factor 6.8 li li density 6 lbs . li li thickness 1 1 2 li li jacket material all service jacket li li standards astm c612 type ia astm c612 typeib astm c553 type iii hh i 558c hh i 558b astm e 84 nrc 1.36 mil i 24244cul723 nfpa255astm c795 astm c1136 li ul