24" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 8in diameter actual front end outer dimensions

actual front end outer dimensions are approximately 52 5/8" width X 22 5/8" height -

+ Product Details Size – 18"w X 26"h is the size for the duct opening measurement only

Airflow – Improved airflow dynamics long neck bBody- reduced noise design - integrated spring fasteners

+ Product Description Upgrade your HVAC system with a high-quality aluminum return grille designed for a clean

Crafted with top-notch quality aluminum

24" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 8in diameter actual front end outer dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 24" x 14" OR 14" x 24" duct opening (measured at the opening), with actual outer dimensions of 26. 5" W x 16. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 23. 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