22" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades + Product Details Size -

+ Product Details Size - 18"w X 34"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 22 5/8" width X 20 5/8" height -

Actual Filter Size – 35 3/4"w x 7 3/4" x 1"

actual front end outer dimensions are approximately 30 5/8" width X 26 5/8" height

+ Product Details Size - 20"w X 28"h is the size for the duct opening measurement only

22" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades + Product Details Size -+ Product Details Perfect Fit & Easy Sizing Designed for a 22" x 14" OR 14" x 22" duct opening (measured at the opening), with actual outer dimensions of 24. 5" W x 16. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 21. 75" x 13. 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