28" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w10h10 + Product Details Size –

+ Product Details Size – 12" x 32" or 32" x 12" is the size for the duct opening measurement only

+ Product Details Size – 24"w X 24"h

vibration-free performance

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 22" or 22" x 10" duct opening (measured at the opening)

actual front end outer dimensions are approximately 10 5/8" width X 18 5/8" height

28" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w10h10 + Product Details Size –+ Product Details Perfect Fit & Easy Sizing Designed for a 28" x 22" OR 22" x 28" duct opening (measured at the opening), with actual outer dimensions of 30. 5" W x 24. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 27. 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