20" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_R-4.2 Yellow display = isOpen

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+ Product Details Size - 20"w X 22"h X 2"d (for duct opening measurement only)

+ Product Description Protect and secure your thermostat with this high-quality Clear Plastic Thermostat Guard

actual front end outer dimensions are approximately 20 5/8" width X 20 5/8" height

20" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_R-4.2 Yellow display = isOpen+ Product Details Perfect Fit & Easy Sizing Designed for a 20" x 14" OR 14" x 20" duct opening (measured at the opening), with actual outer dimensions of 22. 5" W x 16. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 19. 75" x 13. 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