Product Review
EZ-FLO's 18" x 18" Return Air Filter Grille is used for sidewall or ceiling installation. The all steel construction and powder coated finish makes this diffuser a long-lasting, durable choice. The included hardware makes for a quick and easy installation. EZ-FLO's Return Air Filter Grille will ensure maximum airflow. Outer measurements are 20-11/16" x 20-11/16".





![12" X 12 Steel Return Air Filter Grille for 1" Filter - Removable Face/Door - HVAC DUCT COVER - Flat Stamped Face - White [Outer Dimensions: 14.5"w X 14.5"h]](https://m.media-amazon.com/images/I/519daeUXQYL._SL75_.jpg)

![16"w X 16"h Steel Return Air Grilles - Sidewall and Cieling - HVAC DUCT COVER - White [Outer Dimensions: 17.75"w X 17.75"h]](https://m.media-amazon.com/images/I/51GUqs+zWQL._SL75_.jpg)
![16" X 16 Steel Return Air Filter Grille for 1" Filter - Removable Face/Door - HVAC DUCT COVER - Flat Stamped Face - White [Outer Dimensions: 18.5"w X 18.5"h]](https://m.media-amazon.com/images/I/51yt9JXCgJL._SL75_.jpg)