22" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Grilles + Product Details Size –

+ Product Details Size – 22"w X 29"h is the size for the duct opening measurement only

+ Product Details Durable Construction - Made with clear

+ Product Details Size – 26" x 36" or 36" x 26" is the size for the duct opening measurement only

+ Product Details Size – 20"w X 36"h is the size for the duct opening measurement only

and keep the cold air out during the Winter Months

22" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Grilles + Product Details Size –+ Product Details Perfect Fit & Easy Sizing Designed for a 22" x 24" OR 24" x 22" duct opening (measured at the opening), with actual outer dimensions of 24. 5" W x 26. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 21. 75" x 25. 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