20x20 Return Air Grille [Duct Opening Size],Cold Air Return Vent Cover for Wall Or Ceiling,AC Return Vent Cover,Return Air Filter Grille Removable Face/Door for 1 Inch Filters Features: ? This 20x20 return air filter grille is built from thick, one-piece stamped steel, finished in a matte-white powder coat that hides fingerprints, survives bumps, and won’t yellow after years of heating cycles. User-friendly design, this grille seamlessly integrates into your home’s HVAC system to optimize airflow for both heating and cooling. Its modern, low-profile design looks great on any wall or ceiling, providing a clean finish that complements your decor while performing flawlessly. ?Always measure the wall opening to determine which size you should order. Wall Opening Size = Listed Size.20"Width x20"Height is the listed size for the hole in the wall only (Duct opening size), Actual front and outer dimensions are 21.75" Width x 21.75" Height. Be sure to measure the wall hole (space) before ordering. if wall hole size (Duct opening size) : 20"x20", please order. ?Crafted for performance and aesthetics, our 20x20 Return Air Filter Grille ensures efficient, quiet airflow control while seamlessly blending into your home or commercial space. Designed with precision and durability in mind, it optimizes HVAC system performance and enhances indoor air quality. ?The removable door features a simple, tool-free latch. Just slide with your finger to open and swap your standard 1" filter (filter not included) in seconds. No more fumbling with screws or complicated mechanisms. SPECIFICATIONS: -Material: Heavy-Gauge Steel -Finish: Matte White Powder Coat -Compatibility: Standard 1" Air Filters (Filter Not Included) -Installation: Sidewall or Ceiling Overall Dimensions: (for a 20"x20" Duct opening size): 21.75" W x 21.75" H Fin Spacing: 1/2" at 40-degree angle to conceal the filter PACKAGE INCLUDES: 1 x 20"W x 20"H Return Air Grille 1 Set of Mounting Screws NOTE: Please allow a slight 0-0.39 in variance in dimensions due to manual measurement. Always measure your wall opening before ordering to confirm the correct size.