32" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible with Duct 10" + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 30" x 14" OR 14" x 30" duct opening (measured at the opening)

+ Product Details Size – 8" x 18" or 18" x 8" is the size for the duct opening measurement only

+ Product Details Size – 30"w X 20"h is the size for the duct opening measurement only

+ Product Details Size - 10"w X 12"h is the size for the duct opening measurement only

Can be hooked up with our "Butterfly Dampers" for precise airflow control

32" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible with Duct 10" + Product Details Perfect Fit+ Product Details Perfect Fit & Easy Sizing Designed for a 32" x 14" OR 14" x 32" duct opening (measured at the opening), with actual outer dimensions of 34. 5" W x 16. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 31. 75" x 13. 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