4 x 12 Red Oak Wood Vent Cover - Flush No Frame (Unfinished)

4" x 12" Flush No Frame Vent Cover - Red Oak (Unfinished) 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. Duct Opening Size: 4 x 12 Overall Dimensions: 6 x 14 Free Area: 20 Square Inches 2-Way Air Flow - No Damper 3/4" Thick Professional Installation Recommended