12" X 6" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES w16h16 + Product Details Size -

+ Product Details Size - 4"w X 10"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 20 5/8" width X 30 5/8" height

+ Product Description Introducing our 18" x 18" Floor Grille - a reliable and durable air grill designed for exceptional performance and built to last

High quality – high quality solid stamped steel with counter-sunk screw holes (screws included) and no sharp edges

The "W" Shaped Pleats Give You More Filter Surface Thereby Capturing More Dust

12" X 6" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES w16h16 + Product Details Size -+ Product Details Size 12"w X 6"h is the size for the duct opening measurement only, [Outer Dimensions: 14. 5"w X 8. 5"h] Actual Filter Size 13 3 4"w x 7 3 4" x 1" High Quality High quality rust free, strong aluminum construction with smooth finished edges for easy and safe use; Filter grille features a user friendly plastic latch that requires no screwdriver for opening. Installation Location Sidewall and ceiling. Design Heavier gauge than needed,