16" x 32" or 32" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter sidewall + Product Details Size -

+ Product Details Size - 34"w X 22"h is the size for the duct opening measurement only

our Butterfly Damper simplifies the process of managing airflow

scratch-resistant surface that gleams like it's just been waxed

+ Product Details Size - 18"w X 24"h X 2"d (for duct opening measurement only)

16" x 32" or 32" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter sidewall + Product Details Size -+ Product Details Perfect Fit & Easy Sizing Designed for a 16" x 32" OR 32" X 16" duct opening (measured at the opening), with actual outer dimensions of 18. 5" W x 34. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 15. 75" x 31. 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