34" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 3-Way or 4-Way + Product Details Size -

+ Product Details Size - 22"w X 30"h is the size for the duct opening measurement only

+ Product Details Size - 30"w X 25"h is the size for the duct opening measurement only

+ Product Details Size – 24" x 24" with 8" collar T-Bar drop ceiling perforated return grill - metal back casing

+ Product Details Size - 26"w X 24"h is the size for the duct opening measurement only

6" width X 7

34" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 3-Way or 4-Way + Product Details Size -+ Product Details Perfect Fit & Easy Sizing Designed for a 34" x 20" Or 20" x 34" duct opening (measured at the opening), with actual outer dimensions of 36. 5" W x 22. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 33. 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