34" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter steel actual front end outer dimensions

actual front end outer dimensions are approximately 18 5/8" width X 38 5/8" height

+ Product Details Size – 10"w X 8"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 34" x 16" Or 16" x 34" duct opening (measured at the opening)

The lightweight yet rigid construction ensures durability without sacrificing ease of handling

34" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter steel actual front end outer dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 34" x 28" Or 28" x 34" duct opening (measured at the opening), with actual outer dimensions of 36. 5" W x 30. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 33. 75" x 27. 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