14" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w28h28 Filter Grille features a user-friendly

Filter Grille features a user-friendly plastic latch that requires no screwdriver for opening

Actual Filter Size – 23 3/4"w x 11 3/4" x 1"

4" X 14" Is The Size For The Duct Opening (floor/vent hole) Measurement Only

+ Product Details Size - 28"w X 10"h is the size for the duct opening measurement only

14" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w28h28 Filter Grille features a user-friendly+ Product Details Perfect Fit & Easy Sizing Designed for a 14" x 24" OR 24" X 14" duct opening (measured at the opening), with actual outer dimensions of 16. 5" W x 26. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 13. 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