FOR SALE: I have one ten-foot length left of new, black, heating pipes for overhead radiant heat. The pipes are 4 inches in diameter. The outside diameter is 10.2 cm and the inside diameter is 9.8 cm. The thickness is 2 mm. This is the same pipe that is found in arenas or shops and garages. PIPES ONLY!! I do not have the reflectors or furnace. Asking $40.00 per length. Please call 403-935-4362 if interested.