26" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Brown + Product Details Size –

+ Product Details Size – 10"w X 6"h is the size for the duct opening measurement only

+ Product Spec Sheet Aluminum Return Filter Grille Spec Sheet

We pride ourselves on offering top-of-the-line products that meet the highest standards

75" width X 21

+ Product Details Size - 4"w X 16"h is the size for the duct opening measurement only

26" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Brown + Product Details Size –+ Product Details Perfect Fit & Easy Sizing Designed for a 26" x 36" OR 36" x 26" duct opening (measured at the opening), with actual outer dimensions of 28. 5" W x 38. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 25. 75" x 35. 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