26" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum - Cube Core this grille is a testament

this grille is a testament to high standard craftsmanship

6" x 6" - 4-Way Curved Blade Supply Air Grille - Maximum Air Flow - HVAC Vent Cover

actual front end outer dimensions are approximately 28 5/8" width X 18 5/8" height

+ Product Details Size – 30"w X 10"h is the size for the duct opening measurement only

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