22" x 18" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 18" Diameter + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 6" or 6" x 10" duct opening (measured at the opening)

+ Product Details Size – 18"w X 25"h is the size for the duct opening measurement only

Actual Filter Size – 23 3/4"w x 13 3/4" x 1"

ensuring your space stays dry and secure

this thermostat guard is the perfect solution for safeguarding your temperature controls

22" x 18" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 18" Diameter + Product Details Perfect Fit+ Product Details Perfect Fit & Easy Sizing Designed for a 22" x 18" OR 18" x 22" duct opening (measured at the opening), with actual outer dimensions of 24. 5" W x 20. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 21. 75" x 17. 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