34" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible With Duct 12in Actual Filter Size – 23

Actual Filter Size – 23 3/4"w x 33 3/4" x 1"

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

Solid Construction Designed For Floor Use

Adjustable airflow control - by rotating the middle disk

Equipped with a lever to adjust airflow to your preference

34" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible With Duct 12in Actual Filter Size – 23+ Product Details Perfect Fit & Easy Sizing Designed for a 34" x 14" Or 14" x 34" duct opening (measured at the opening), with actual outer dimensions of 36. 5" W x 16. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 33. 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