34" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_R-8.0 Pink actual front end outer dimensions

actual front end outer dimensions are approximately 18 5/8" width X 27 5/8" height

+ Product Details Size – 28"w X 36"h is the size for the duct opening measurement only

Actual Filter Size – 13 3/4"w x 33 3/4" x 1"

The Contempo slotted Grate

+ Product Details Size – 34"w X 6"h is the size for the duct opening measurement only

34" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_R-8.0 Pink actual front end outer dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 34" x 24" Or 24" x 34" duct opening (measured at the opening), with actual outer dimensions of 36. 5" W x 26. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 33. 75" x 23. 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