Owens Corning R 13 Unfaced Fiberglass Insulation Batts 3.5 in. x 16 in. x 96 in. (5 Bags) 012725 UL Certified Manufacturer Warranty 2 UL Certified Manufacturer Warranty 2 year limited Frequently Asked Questions (FAQ): high polish finish Quick release button on ratchet allows for rapid socket and or accessory change 90 tooth ratcheting design provides 4 ° of arc swing Quick release button on the 90 tooth ratchet allows for rapid socket and accessory changes Organized in a blow molded case for convenient storage and easy transportation Meets or exceeds ASME specifications and is covered by our hassle free lifetime guarantee Q: Is a vapor barrier required with this insulation Stability: Dimensionally stable won't settle or decay over time