36" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter ceiling Design – Fixed Hinged for

Design – Fixed Hinged for easy filter change & cleaning - uses a 1" thick filter

Actual Filter Size – 23 3/4"w x 13 3/4" x 1"

+ Product Details Size - 22"w X 28"h is the size for the duct opening measurement only

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+ Product Details Size – 32"w X 25"h is the size for the duct opening measurement only

36" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter ceiling Design – Fixed Hinged for+ Product Details Perfect Fit & Easy Sizing Designed for a 36" x 16" OR 16" x 36" duct opening (measured at the opening), with actual outer dimensions of 38. 5" W x 18. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 35. 75" x 15. 75" x 1" Premium Airflow Efficiency High performance cube core eggcrate design allows 95% airflow efficiency, reducing energy costs and maximizing HVAC system lifespan. Durable, Rust Free Aluminum