Meeco's Red Devil 1-1/2 In. x 10 Ft. Fiberglass Fireplace Insert Insulation

Strip of fiberglass insulation forms a smoke and gas tight seal between a fireplace insert and the surrounding masonry. Insulation should be replaced every time an insert is removed for cleaning. Peel off backing and apply to the back of fireplace insert flange to seal space between flange and masonry surface.