26" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter rg1010 + Product Details Size –

+ Product Details Size – 12"w X 24"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 16" OR 16" x 20" duct opening (measured at the opening)

+ Product Details Size - 8"w X 26"h X 2"d (for duct opening measurement only)

+ Product Details Size - The listed 6" diameter refers specifically to the size of the duct opening

75" width X 5

26" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter rg1010 + Product Details Size –+ Product Details Perfect Fit & Easy Sizing Designed for a 26" x 22" OR 22" x 26" duct opening (measured at the opening), with actual outer dimensions of 28. 5" W x 24. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 25. 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