16" x 26" or 26" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Insulated Line With a 6" diameter for

With a 6" diameter for the duct opening measurement

75"H – fits a 14" X 6" duct opening

Actual Filter Size – 35 3/4"w x 27 3/4" x 1"

+ Product Details Size – 34" x 36" or 36" x 34" is the size for the duct opening measurement only

listed size +2"

16" x 26" or 26" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Insulated Line With a 6" diameter for+ Product Details Perfect Fit & Easy Sizing Designed for a 16" x 26" OR 26" X 16" duct opening (measured at the opening), with actual outer dimensions of 18. 5" W x 28. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 15. 75" x 25. 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