Use for venting listed natural gas or liquid propane Category I, draft hood appliances, or appliances that have been specifically tested and listed to use Type B Gas Vent. The appliances listed typically use Type B Gas Vent systems, but not always: Furnaces, Water Heaters, Boilers, Room Heaters, Decorative Gas Appliances, and Unit Heaters. To calculate installed length, subtract 1 1/2"from each connection of vent. A 1"clearance (air space) to combustible materials must be maintained. To calculate OD add 5/8. This product ships in approximately 1 days
Carcinogens: This product can expose you to chemicals including Lead, which is [are] known to the State of California to cause c