18" X 16" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES 6" Diameter hp-birdscreen-popup { width: calc(100% -

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HIGH QUALITY & DURABLE – Made of UV AND Fire Resistant ABS Plastic – UL-94V-0 Equivalent

actual front end outer dimensions are approximately 14 5/8" width X 36 5/8" height

Ideal for Walls & Ceilings: Designed for seamless installation in standard 12" X 8" duct openings

875" width X 31

18" X 16" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES 6" Diameter hp-birdscreen-popup { width: calc(100% -+ Product Details + Product Details Size 18"w X 16"h is the size for the duct opening measurement only, [Outer Dimensions: 20. 5"w X 18. 5"h] Actual Filter Size 17 3 4"w x 15 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