Unfinished Maple Flush (no/frame) Vent, 4" X 10" (duct), Trimline style

The flush styling with a design uniqueness all its own. The louvers are widened for optimal airflow and the exterior frame is eliminated for a smaller overall size. Sets flat on the subfloor. May be installed permanently or as a lift out vent to permit cleaning of the duct throat. No damper option available.