Round w/ Beveled Frame, Polished Billet Aluminum Vent assembly, for 2-1/2 Inch Duct Hose. Polished Aluminum Finish, adjustable direction for variable airflow control. Restore your failing vents back to proper working condition with this vent assembly. Dimensions: 2-3/4" outside diameter Requires 2-5/16" hole for mounting Made in the ...