12" X 8" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES 3-Way or 4-Way 4x 48" Length Duct

4x 48" Length Duct

function toggleAccordion(event) { event

5" height x 13

Actual Filter Size – 21 3/4"w x 11 3/4" x 1"

Universal size

12" X 8" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES 3-Way or 4-Way 4x 48" Length Duct+ Product Details Size 12"w X 8"h is the size for the duct opening measurement only, [Outer Dimensions: 14. 5"w X 10. 5"h] Actual Filter Size 11 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,