4" x 12" (5.75" x 13.875" Overall) Oil-Rubbed Bronze Mission Register with Damper (HVAC VENT COVER) 3mm steel core with plated finish protected with lacquer coating Removable Heavy Duty Alumnium Damper adjusts to turn airflow on or off Optional Wall Clips (Sold Separately) convert 2" and 4" wide register to a wall register Listed sizes are the actual hole size the floor register will be inserted in to Damper Dimensions: 3.75" x 11.75"