22"W X 22"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 23.875"W X 23.875"H] Powder-Coat Universal Fit – Dimensions of

Universal Fit – Dimensions of 6-3/8" wide x 3-1/2" high x 3" deep make it compatible with most standard thermostat models

you can watch this informative video tutorial: How to Measure Your Vent Hole Before Ordering a Grille

+ Product Details Perfect Fit & Easy Sizing - Designed for a 36" x 28" OR 28" x 36" duct opening (measured at the opening)

Actual Filter Size – 33 3/4"w x 5 3/4" x 1"

22"W X 22"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 23.875"W X 23.875"H] Powder-Coat Universal Fit – Dimensions of+ Product Details Size 22"w X 22"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 23. 875" width X 23. 875" height. High Quality High quality aluminum with counter sunk screw holes (screws included) and no sharp edges. Design Unrestricted airflow For Your HVAC system noise free components no vibrating louvers etc. Powder Coat Finish Smooth, shiny, scratch resistant, beautiful. Looks like it was