4" X 12" Modern Victorian Floor Register Grille With Dampers - Decorative Grate - HVAC Vent Duct Cover - Matte Black 18in diameter actual front end outer dimensions

actual front end outer dimensions are approximately 24 5/8" width X 26 5/8" height

Auto Switch On Sensor: - Yes

exhaust fans and range hoods that need turns from 5° - 90° degrees and are simple to adjust

+ Product Details Size – 8" x 10" or 10" x 8" is the size for the duct opening measurement only

4" X 12" Modern Victorian Floor Register Grille With Dampers - Decorative Grate - HVAC Vent Duct Cover - Matte Black 18in diameter actual front end outer dimensions4" X 12" Is The Size For The Duct Opening (floor vent hole) Measurement Only, Actual Front End Outer Dimensions Are 5. 5" X 13. 5" SEE BELOW IN DESCRIPTION HOW TO MEASURE A GRILLE Solid Rigid Steel Body For Durability and Reliability With Dampers Operate able by Switch For Airflow Directional Control Premium Plated Finish and Modern Victorian Design Forming a Luxurious & Impressive Piece For Your Home Quality Packaging Carefully Shrink Wrapped With