34" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w32h32 actual front end outer dimensions

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

Actual Filter Size – 9 3/4"w x 27 3/4" x 1"

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

Actual Filter Size – 29 3/4"w x 11 3/4" x 1"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 10" OR 10" x 24" duct opening (measured at the opening)

34" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w32h32 actual front end outer dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 34" x 6" Or 6" x 34" duct opening (measured at the opening), with actual outer dimensions of 36. 5" W x 8. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 33. 75" x 5. 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 Made