6" x 34" or 34" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 8.5" X 36.5"] White + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 14" or 14" x 8" duct opening (measured at the opening)

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Operating from -40°F to +248°F

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

+ Product Details Size - 6"w X 32"h is the size for the duct opening measurement only

6" x 34" or 34" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 8.5" X 36.5"] White + Product Details Perfect Fit+ Product Details Perfect Fit & Easy Sizing Designed for a 6" x 34" or 34" x 6" duct opening (measured at the opening), with actual outer dimensions of 8. 5" W x 36. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 5. 75" x 33. 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 Made