EZ-FLO 18 x 18 Inch (Duct Opening) White Return Air Vent Cover for Wall or Ceiling, 20-11/16 Inch x 20-11/16 Inch (Overall Dimensions), Solid Steel Return Air Grille, HVAC Air Return, 61656

Air vent deflectors feature a duct opening that measures 18 x 18 inches, and can be used for wall or ceiling mount.

The overall dimension measures 20-11/16 x 20-11/16 in inches (WxL) and features 4 vent rows Louvers and slotted vanes in a fixed position control the amount and direction of airflow for rattle-free quiet ventilation and optimized performance for heating and cooling systems DURABLE: Return air grilles feature all-steel construction with a heavy-duty powder-coated matte white finish to add a contemporary touch to your home decor and withstand heat and cold without warping ENERGY EFFICIENT: EZ-FLO air vent covers are designed for optimal airflow, increasing the efficiency of residential and commercial HVAC systems; suitable for heaters, AC, or combined systems EASY TO INSTALL: Home improvement made EZ; vent cover grilles are easy to install and include 4 screws for installation