hg power 6 inch exhaust vent cover, hg power metal dryer vent cover outside with removable screen & cushioned non return flap, air wall vent for house, ac, opening diameter: 5.7" black 6 in[neck size:5.7in] black is up for auction in Tools & Home Improvement. The current bid is $1.00, 97% below the $29.99 MSRP, in As Is condition. This auction has ended — similar items appear in live auctions regularly.