22" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Curved Blade Steel ensuring it fits most standard

ensuring it fits most standard thermostat models

+ Product Details Size - 36"w X 18"h X 2"d (for duct opening measurement only)

75" width X 19

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 34" OR 34" x 20" duct opening (measured at the opening)

+ Product Details Size – 14"w X 22"h is the size for the duct opening measurement only

22" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Curved Blade Steel ensuring it fits most standard+ Product Details Perfect Fit & Easy Sizing Designed for a 22" x 12" OR 12" x 22" duct opening (measured at the opening), with actual outer dimensions of 24. 5" W x 14. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 21. 75" x 11. 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