R6.7 Unfaced Multi-purpose Fiberglass Insulation, 5.33 Sq. Ft. Coverage, 2 x 16 x 48-In. Roll Category_Grills & Outdoor Cooking The exclusive low-ash formulation helps

The exclusive low-ash formulation helps protect the exhaust catalysts and diesel particulate filters found on the latest low-emission vehicles

Features copper shells machined from solid bar stock (not tubing)

Thicker backer for extreme life in demanding applications

has just 1 button that silences or tests the unit

3M will refund the purchase price of this tape

R6.7 Unfaced Multi-purpose Fiberglass Insulation, 5.33 Sq. Ft. Coverage, 2 x 16 x 48-In. Roll Category_Grills & Outdoor Cooking The exclusive low-ash formulation helpsJohns Manville Formaldehyde free multi purpose roll insulation is for use in gaps around doors, windows, wall and window air conditioning units. It helps save energy and offers good sound absorption. Inorganic glass fiber will not rot, mildew, or deteriorate. This product has been GREENGUARD (TM) certified for superior indoor air quality.