34" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 6in diameter and are ready to go

and are ready to go for the next job

even without needing to remove the thermostat

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+ Product Details Size – 14" x 28" or 28" x 14" is the size for the duct opening measurement only

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34" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 6in diameter and are ready to go+ Product Details Perfect Fit & Easy Sizing Designed for a 34" x 30" Or 30" x 34" duct opening (measured at the opening), with actual outer dimensions of 36. 5" W x 30. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 33. 75" x 29. 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