16" X 10" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Hi-Lo Oval Stack Head this model allows for mounting

this model allows for mounting without removing the thermostat

actual front end outer dimensions are approximately 28 5/8" width X 26 5/8" height

+ Product Details Size & Compatibility – The size of galvanized sheet metal straight floor boot is 10" X 6" X 5"

actual front end outer dimensions are approximately 26 5/8" width X 16 5/8" height

Ideal for Walls & Ceilings: Designed for seamless installation in standard 18" X 12" duct openings

16" X 10" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Hi-Lo Oval Stack Head this model allows for mounting+ Product Details Size 16"w X 10"h is the size for the duct opening measurement only, [Outer Dimensions: 18. 5"w X 12. 5"h] Actual Filter Size 15 3 4"w x 9 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,