36" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter d display === 'none' || dd

display === 'none' || dd

75" Width X 26

+ Product Details Perfect Fit & Easy Sizing - Designed for a 14" x 34" OR 34" X 14" duct opening (measured at the opening)

+ Product Details Size - 18"w X 14"h is the size for the duct opening measurement only

16" x 3" Aluminum Spiral Duct Air Vent Grille Cover - Fully Adjustable Double Deflection HVAC Air Supply

36" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter d display === 'none' || dd+ Product Details Perfect Fit & Easy Sizing Designed for a 36" x 32" OR 32" x 36" duct opening (measured at the opening), with actual outer dimensions of 38. 5" W x 34. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 35. 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