JM Building and Residential Fiberglass, Insulation Thickness: 13 in, Material: Fiberglass, Facing Type: FSK-25, Length: 48 in, Width: 24 in, R-Value: 38, Application: For Wide Variety of Wood Frame, Engineered Wood and Steel Frame Construction, Special Features: Reinforced, Flame Resistant, Flame Spread Index: <25, Smoke Developed Index: <50, Water Vapor Permeability: 0.05 perm-in, Water Vapor Sorption: <5 %, For Use With: Steel Stud Framing
Application : For Wide Variety of Wood Frame, Engineered Wood and Steel Frame Construction
Facing Type : FSK-25
Flame Spread Index : <25
For Use With : Steel Stud Framing
Insulation Thickness : 13 in
Item Name : Building and Residential Fiberglass
Length : 48 in
Material : Fiberglass
R-Value : 38
Smoke Developed Index : <50
Special Features : Reinforced, Flame Resistant
Water Vapor Permeability : 0.05 perm-in
Water Vapor Sorption : <5 %
Width : 24 in
Johns Manville FSK-25 faced insulation is a lightweight flame resistant thermal and acoustical fiber glass insulation made of long, resilient glass fibers bonded with a thermosetting resin. The batts are laminated with an FSK (foil-scrim-kraft) facing, which enables the insulation to carry a fire hazard classification rating of 25/50 or less per ASTM E84 and also serves as an excellent vapor retarder. FSK-25 faced insulation may be left exposed where codes permit.
Standards/Certifications: ASTM C665 Type III Class A Category I|Energy Star Certified|IBC|Indoor Air Quality Certified|NAIMA 16 CFR Part 460|Recycled Content Certified