Snap-lock coupling ends and lightweight. Double wall type B vent pipe. Rugged, double-wall construction of corrosion-resistant galvanized steel and aluminum. SKU: 41662272 MFG: 4E18 Shop more products by AmeriVent. SHARE Share on Facebook Tweet on Twitter Share on Google+ Pin on Pinterest Shipping charges calculated at checkout. $21.09 Quantity 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: 4" x 1-1/2' Gas vent pipe Material: Aluminum/Steel Finish: Galvanized Double wall type B vent pipe Rugged, double-wall construction of corrosion-resistant galvanized steel and aluminum Snap-lock coupling ends and lightweight FEATURES MFR: 4E18 SKU: 41662272 UPC: 095029401006 Brand: AmeriVent