Gas Vent, Round, Type B, 4-In.

Round Gas Vent Double Wall Construction with its built-in air space, provides permanent insulation and keeps the inner pipe hot and outer relatively cool

• External screen prevents entry of most bird species and helps prevent rain and debris from entering the vent.
• These tops must not be used for woodburning applications
• Underwriters Laboratories UL 441 and National Fire Protection Agency NFPA 54 and NFPA 211
• Venting gas fired appliances, water heaters, furnaces, stoves, etc.
• LockTab-An alternative method to secure pipe when required by local code.
• Outer material 28 gauge galvanized steel
• Inner liner is Aluminum
• Check Appliance Installation Instructions For Details
• Industry Best Warranty Contact Selkirk For Details