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The Selkirk AF3-BVA is a 3 in Flexi-Liner B vent adapter designed to transition listed Type B gas vent systems to Selkirk Flexi-Liner chimney liners. The adapter mates Type B gas vent to a seamless heavy-duty Flexi-Liner constructed of 3000 series 2-ply aluminum with a maximum flue gas temperature of 470 °F. It is intended for relining masonry or listed factory-built chimneys serving Category I natural gas or propane appliances and is UL 1777 listed when installed with an insulation sleeve.
3 in B-vent to Flexi-Liner adapter; seamless 3000 series aluminum 2-ply liner; UL 1777 listed with insulation sleeve
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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