1.The circular diffuser has a simple design, beautiful shape and strong.Powder coated in white with three matching color screws included.

2.Listed size of 12" is for the duct opening measurement.Actual outside dimension is 16"

3.High Quality - High Quality Solid Aluminum and No Sharp Edges - Powder-Coat Finish - Smooth, Shiny, Scratch-Resistant, Beautiful.

4.Ceiling diffuser with all direction air deflection.Constructed with steel with step down structure.

5.The installation design of the circular diffuser is very simple, just need to be installed on the ceiling or wall.