30" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w8h8 + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 10" or 10" x 6" duct opening (measured at the opening)

actual front end outer dimensions are approximately 16 5/8" width X 22 5/8" height

+ Product Spec Sheet Aluminum Return Filter Grille Spec Sheet

actual front end outer dimensions are approximately 38 5/8" width X 12 5/8" height -

High Quality Copper Coil Meets/Beats ASTM B280 Standard for Air Conditioning and Refrigeration (Made From C12200 - 99

30" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w8h8 + Product Details Perfect Fit+ Product Details Perfect Fit & Easy Sizing Designed for a 30" x 36" OR 36" x 30" duct opening (measured at the opening), with actual outer dimensions of 32. 5" W x 38. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 29. 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