soknockk 10x6 modern ac vent cover – decorative air vent register grille, linear slot diffuser, adjustable airflow, quiet operation, hvac vent cover for ceiling, wall & floor, black aluminum alloy 10x6 black is up for auction in Home & Kitchen. The current bid is $1.00, 97% below the $39.99 MSRP, in Good Condition. This auction has ended — similar items appear in live auctions regularly.