excelfu 12x6 baseboard return air grille for 12"wx6"h duct opening, 7/8" depth | steel baseboard return air vent cover grill,7/8" thick margin turnback for baseboard,outer dim 13.75"w x 7.75 "h x 7/8" is up for auction in Tools & Home Improvement. This item is in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.