22" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible With Duct 8in with actual outer dimensions of

with actual outer dimensions of 26

Actual Filter Size – 11 3/4"w x 7 3/4" x 1"

+ Product Details Size - 36"w X 18"h is the size for the duct opening measurement only

Actual Filter Size – 9 3/4"w x 35 3/4" x 1"

Actual Filter Size – 7 3/4"w x 17 3/4" x 1"

22" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible With Duct 8in with actual outer dimensions of+ Product Details Perfect Fit & Easy Sizing Designed for a 22" x 24" OR 24" x 22" duct opening (measured at the opening), with actual outer dimensions of 24. 5" W x 26. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 21. 75" x 25. 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