26" x 26" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w22h22 + Product Details Size -

+ Product Details Size - 24"w X 18"h X 2"d (for duct opening measurement only)

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 22" OR 22" x 20" duct opening (measured at the opening)

+ Product Spec Sheet 2-Way Wall/Ceiling Register Spec Sheet

Adjustable airflow control – Adjustable airflow control: The system allows users to customize the amount of air supply

26" x 26" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w22h22 + Product Details Size -+ Product Details Perfect Fit & Easy Sizing Designed for a 26" x 26" duct opening (measured at the opening), with actual outer dimensions of 28. 5" W x 28. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 25. 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 Made from