30" x 26" Cube Core Eggcrate Return Air Filter Grille for 1" Filter ceiling + Product Description Protect and

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

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actual front end outer dimensions are approximately 10 5/8" width X 12 5/8" height

+ Product Details Size – 18"w X 22"h is the size for the duct opening measurement only

High Quality – high quality solid stamped steel with counter-sunk screw holes (screws included) and no sharp edges

30" x 26" Cube Core Eggcrate Return Air Filter Grille for 1" Filter ceiling + Product Description Protect and+ Product Details Perfect Fit & Easy Sizing Designed for a 30" x 26" OR 26" x 30" duct opening (measured at the opening), with actual outer dimensions of 32. 5" W x 28. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 29. 75" x 27. 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