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

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

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actual front end outer dimensions are approximately 10 5/8" width X 30 5/8" height

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

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

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