22" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 14" Round Duct Pipe Effortless Integration: Crafted for easy

Effortless Integration: Crafted for easy connection to supply grilles of drop ceiling T-Bar vent covers

+ Product Details Size – 20"w X 40"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 14 5/8" width X 32 5/8" height

+ Product Details Size - 40"w X 20"h is the size for the duct opening measurement only

+ Product Details Size – 25"w X 6"h is the size for the duct opening measurement only

22" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 14" Round Duct Pipe Effortless Integration: Crafted for easy+ Product Details Perfect Fit & Easy Sizing Designed for a 22" x 22" duct opening (measured at the opening), with actual outer dimensions of 24. 5" W x 24. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 21. 75" x 21. 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 Made from