DuraVent FasNSeal 12" 29 4C Stainless Steel Tall Cone Flashing converts from single flue to direct vent Model 600412 Clearance Zero Zero clearance 1200H LP UPB G9B F01 NS Model 600412 Clearance Zero Zero clearance when installed into a masonry chimney and wrapped with a 1 2" ceramic fiber insulation blanket CFT 48 PT C (2) DuraTech® Premium Brand DuraVent Series FasNSeal Model FSAF12 Product Type Tall Cone Flashing
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