22154 PVC Concentric Vent Termination Kit, 4-inch for Water Heater$$Tools & Hardware Other

The concentric design cuts off the incoming fresh air and exhausts smoke. The preferred vertical roof terminal is not easily damaged, reduces the chance of absorbing pollutants,and sees less steam. New Feature - A 4" vent screen is attached for new 4" Concentric Vent Kit as a accessory.The vent screen is designed to keep birds and leaves from dropping into the exhausting pipe. Comply with UL 1738 standard. Cut only one hole instead of tradditionally cutting two holes through roof or side wall for exhaust and intake pipes to complete installation. Includes all fittings will need to install the vent. Please consult manual to your appliance prior to purchasing this concentric vent kit to ensure that it is compatible with your system and do not use the concentric vent kit for anything.