hg power 6 inch soffit vent, adjustable air vent cover, abs round ceiling vent covers for living room, attic, bathroom, kitchen, ventilation use, white - opening size 5.66" 1 6 inch is up for auction in Home & Kitchen. The current bid is $1.00, 92% below the $12.99 MSRP, in Good Condition. This auction has ended — similar items appear in live auctions regularly.