30" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Insulated Line actual front end outer dimensions

actual front end outer dimensions are approximately 30 5/8" width X 28 5/8" height

designed to distribute air evenly throughout your space

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 14" OR 14" X 16" duct opening (measured at the opening)

actual front end outer dimensions are approximately 5

+ Product Details Size - 25"w X 24"h is the size for the duct opening measurement only

30" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Insulated Line actual front end outer dimensions+ 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