Knauf Ecobatt R-38 HD Unfaced Fiberglass Insulation Batts - All Sizes This item is made to order and cannot be cancelled or amended or returned once ordered as it's dispatched from the manufacturer. 5-inch board has an R-value

5-inch board has an R-value of 9

Can be used only on composition or asphalt shingle roofs with 3:12 minimum pitch

preventing flame spread from room to room and floor to floor

21 In x 26

Knauf Ecobatt R-38 HD Unfaced Fiberglass Insulation Batts - All Sizes This item is made to order and cannot be cancelled or amended or returned once ordered as it's dispatched from the manufacturer. 5-inch board has an R-valueIf you require delivery to ID, MT, OR or WA, please select that delivery zone as pricing and delivery to those states may vary. Knauf EcoBatt Fiberglass Insulation Batts with ECOSE Technology are a flexible glass mineral wool batt insulation made from sand and over 50% recycled glass bottles bonded with ECOSE Technology. Fiberglass insulation is the most cost effective way to increase thermal performance. By reducing energy usage, fiberglass