Light-density fiber glass batts with a kraft, foil, or a foil scrim kraft (FSK) fire-resistant vapor retarder facing. Size Sq/Ft Per Bag Batts Per Bag 12" x 16" x 48" 42.67 8 12" x 24" x 48" 64 8 USES To improve thermal performance of exterior and interior walls and floor/ceiling assemblies. Kraft: non-exposed steel stud construction. Foil: non-exposed wood and steel stud construction. FSK-25: where a Fire Hazard Classification of 25/50 is required. PRODUCT BENEFITS Excellent thermal performance. Will not rot or mildew resists fungal growth. Lightweight easily fabricated and installed. FSK-25 only: UL listed flame spread rating of 25 for exposed applications. Low perm rating.
