Pipe sections combine corrosion-resistant stainless steel and sturdy galvanized steel for strong chimney construction. Lightweight pipe with snap-lock joints offers faster easier installations. Features a space-age refractory blanket between the stainless steel / galvanized walls to withstand intermittent temperatures up to 2100 degrees F. as called for in UL 103 HT Standard. Requires 2-inch air space to combustibles; Ameri-tec; 8-inch ID - 11-inch OD; Length 24-inch