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+ Product Details Size – 28"w X 18"h is the size for the duct opening measurement only
Ideal for Walls & Ceilings: Designed for seamless installation in standard 16" X 6" duct openings
+ Product Details Size – 8"w X 4"h is the size for the duct opening measurement only
+ Product Details Size – 30"w X 20"h is the size for the duct opening measurement only
+ Product Details Size – 10" x 36" or 36" x 10" is the size for the duct opening measurement only
22" x 18" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades with Damper + Product Details Size –+ Product Details Perfect Fit & Easy Sizing Designed for a 22" x 18" OR 18" x 22" duct opening (measured at the opening), with actual outer dimensions of 24. 5" W x 20. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 21. 75" x 17. 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
US$ 29.99
US$ 14400.00
US$ 32.00
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US$ 188.00