4” Flange freeze protection

Inner-Lining Insulation is 1” high-temperature fiberglass mat mechanically bonded to withstand temperatures from-40 to 1200°F
Inner and outer-lining is a silicone impregnated woven fiberglass cloth that is durable and resistant to oil and water. Rated up to 450°F
Materials included are mild steel lacing anchors, washers, wire and dome caps