34" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 14" Diameter Actual Filter Size – 35

Actual Filter Size – 35 3/4"w x 27 3/4" x 1"

7/8" - 3397 PSI

actual front end outer dimensions are approximately 30 5/8" width X 36 5/8" height

Measuring 3" in diameter for the duct opening

Actual Filter Size – 29 3/4"w x 27 3/4" x 1"

34" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 14" Diameter Actual Filter Size – 35+ Product Details Perfect Fit & Easy Sizing Designed for a 34" x 36" OR 36" x 34" duct opening (measured at the opening), with actual outer dimensions of 36. 5" W x 38. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 33. 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