14" x 28" or 28" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Copper Coil addEventListener('click'

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+ Product Details Size – 26"w X 28"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 26 5/8" width X 24 5/8" height

making it ideal for preventing tampering or unauthorized adjustments

Actual Filter Size – 9 3/4"w x 11 3/4" x 1"

14" x 28" or 28" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Copper Coil addEventListener('click'+ Product Details Perfect Fit & Easy Sizing Designed for a 14" x 28" OR 28" X 14" duct opening (measured at the opening), with actual outer dimensions of 16. 5" W x 30. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 13. 75" x 27. 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