22" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum Adjustable Curved Blade ensuring it fits most standard

ensuring it fits most standard thermostat models

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

Actual Filter Size – 29 3/4"w x 29 3/4" x 1"

+ Product Details Size – 30"w X 8"h is the size for the duct opening measurement only

22" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum Adjustable Curved Blade ensuring it fits most standard+ Product Details Perfect Fit & Easy Sizing Designed for a 22" x 20" OR 20" x 22" duct opening (measured at the opening), with actual outer dimensions of 24. 5" W x 22. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 21. 75" x 19. 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