36" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_R-8.0 Pink + Product Details Size -

+ Product Details Size - 10"w X 6"h X 2"d (for duct opening measurement only)

+ Product Details Size – 10" x 28" or 28" x 10" is the size for the duct opening measurement only

actual front end outer dimensions are approximately 12 5/8" width X 10 5/8" height

+ Product Details Size - 28"w X 24"h is the size for the duct opening measurement only

+ Product Details Size - 26"w X 20"h is the size for the duct opening measurement only

36" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_R-8.0 Pink + Product Details Size -+ Product Details Perfect Fit & Easy Sizing Designed for a 36" x 32" OR 32" x 36" duct opening (measured at the opening), with actual outer dimensions of 38. 5" W x 34. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 35. 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