24" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 8" Diameter + Product Details Size –

+ Product Details Size – 28"w X 30"h is the size for the duct opening measurement only

Simplified Installation: Our Butterfly Damper ensures easy setup

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

providing efficient performance of up to 300m3/h

24" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 8" Diameter + Product Details Size –+ Product Details Perfect Fit & Easy Sizing Designed for a 24" x 16" OR 16" x 24" duct opening (measured at the opening), with actual outer dimensions of 26. 5" W x 18. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 23. 75" x 15. 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