32" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w8h8 Actual Filter Size – 29

Actual Filter Size – 29 3/4"w x 15 3/4" x 1"

+ Product Details Size – 24"w X 32"h is the size for the duct opening measurement only

75" width X 33

75"H – fits a 20" X 18" duct opening

5" Wide x 12" Tall x 2

32" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w8h8 Actual Filter Size – 29+ Product Details Perfect Fit & Easy Sizing Designed for a 32" x 36" Or 36" x 32" duct opening (measured at the opening), with actual outer dimensions of 34. 5" W x 38. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 31. 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