26" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 3-Way or 4-Way it's built to last and

it's built to last and will never rust

no professional tools needed

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

Installation Location – Wall or door mount - door thickness up to 32mm - anodised finish - smooth & beautiful

actual front end outer dimensions are 13

26" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 3-Way or 4-Way it's built to last and+ Product Details Perfect Fit & Easy Sizing Designed for a 26" x 16" OR 16" x 26" duct opening (measured at the opening), with actual outer dimensions of 28. 5" W x 18. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 25. 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