20" X 6" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Insulated Flexible Ducts R-6.0 actual front end outer dimensions

actual front end outer dimensions are approximately 30 5/8" width X 36 5/8" height

Ideal for straight-line transitions

actual front end outer dimensions are approximately 13" width X 13" height

Heavy-Duty Construction: Powder-coated finish prevents rust

actual front end outer dimensions are approximately 38 5/8" width X 26 5/8" height -

20" X 6" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Insulated Flexible Ducts R-6.0 actual front end outer dimensions+ Product Details Size 20"w X 6"h is the size for the duct opening measurement only, [Outer Dimensions: 22. 5"w X 8. 5"h] Actual Filter Size 19 3 4"w x 5 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,