26" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w18h18 the actual front end outer

the actual front end outer dimensions are 8" in diameter

Actual Filter Size – 19 3/4"w x 9 3/4" x 1"

75"H – fits a 10" x 8" duct opening

+ Product Details Perfect Fit & Easy Sizing - Designed for a 34" x 36" OR 36" x 34" duct opening (measured at the opening)

Its polished pre-finish gloss varnish not only adds to its appeal but also ensures easy installation

26" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w18h18 the actual front end outer+ Product Details Perfect Fit & Easy Sizing Designed for a 26" x 30" OR 30" x 26" duct opening (measured at the opening), with actual outer dimensions of 28. 5" W x 32. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 25. 75" x 29. 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