ducting
johns manville 670380 duct insulation1 1 2in x 48in x 25ft
duct insulation wrap fiberglass material of construction foil scrim kraft jacket material color silver thickness 1 1 2 in . approx . r factor 4.7 1 lbs . density 48 in . width 25 ft. length temp . range 32 to 250 f standards astm c 411astm c 1104astm c665 astm c 1338 astm e 84 ul723 nfpa 90acan ulc s102 1188astm c1290 astm c553 astm c1136s br b features b ul li color silver li li item duct insulation li li length 25 ft. li li material of construction fiberglass li li temp . range 32 to 250 f li li type wrap li li width 48 li li approx . r factor 4.7 li li density 1 lbs . li li thickness 1 1 2 li li jacket material foil scrim kraft li li standards astm c 411astm c 1104astm c665 astm c 1338 astm e 84 ul723 nfpa 90acan ulc s102 1188astm c1290 astm c553 astm c1136s li ul