Amazon.com: Ceramic Fiber Blanket Insulation Baffle Fire Blanket-1" x 24" x 25' High Density Heat 2300F 6# , for Stoves, Furnace, Kilns, Fire Bricks, Boilers, Kilns, Blacksmithing, Pizza Ovens - Ceramaterials :
Ceramic Fiber Insulation -Unifrax Durablanket S Ceramic Fiber Blanket Insulation rated to 2300°F