Accord AMFRABM410 Floor Register with Marquis Design, 4-Inch x 10-Inch(Duct Opening Measurements), Antique Brass Solid steel face for durability and reliability Premium plated antique brass finish in a classic marquis design All metal damper box with switch for airflow adjustments and frustration free operation Easy to Install - Simply remove the old register and place your new register in the duct opening For floor application - Listed product sizes refer to floor duct opening measurements, not the register itself