34" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Insulated Line Universal Fit – Dimensions of

Universal Fit – Dimensions of 6-3/8" wide x 3-1/2" high x 3" deep make it compatible with most standard thermostat models

+ Product Details Size – 28" x 34" or 34" x 28" is the size for the duct opening measurement only

+ Product Details Size – 28"w X 10"h is the size for the duct opening measurement only

Heavy-Duty Construction: Powder-coated finish prevents rust

34" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Insulated Line Universal Fit – Dimensions of+ Product Details Perfect Fit & Easy Sizing Designed for a 34" x 32" Or 32" x 34" duct opening (measured at the opening), with actual outer dimensions of 36. 5" W x 34. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 33. 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