External screen prevents entry of most bird species. For gravity draft venting of "Listed" LP or natural gas burning appliances. Not for wall furnaces or woodburning applications. SKU: 40156432 MFG: 105800 Shop more products by Selkirk. SHARE Share on Facebook Tweet on Twitter Share on Google+ Pin on Pinterest Shipping charges calculated at checkout. $21.99 Quantity 6 12 18 24 30 36 42 48 54 60 In Stock Add to cart Request a Bulk Quote Thank you for your quote request. We will be in touch. DETAILS Description DESCRIPTION Highlights: Size: 5" Type "B" gas vent OD = ID + 1/2" Inner wall aluminum, outerwall galvanized For gravity draft venting of "Listed" LP or natural gas burning appliances 100 million BTU per hr., 500 degree F max. Not for wall furnaces or woodburning applications External screen prevents entry of most bird species Boxed FEATURES MFR: 105800 SKU: 40156432 UPC: 053713126314 Brand: Selkirk