THIS AUCTION IS FOR 1 BRAND NEW WHITE ALUMINUM AIR VENT, WITH MESH FILTER. THE TOP COVER IS HINGED AND DOES OPEN UP , AS SHOWN IN THE SECOND PICTURE. THESE MEASURE 8 1/4" X 17 1/4" ACROSS THE FRONT OF THE VENT.. AND THE CUTOUT IS 7"X16".. AGAIN THE AUCTION IS FOR 1 VENT.  THANKS