The range of grilles is wide, and includes round and rectangular grilles with many specifications.
The grilles are made of various materials such as PVC/ABS, aluminium, stainless steel, powder coated steel and aluminium, or red copper.
Some models can be manually adjusted or closed using lever or pull-cord, and most models can be fitted with flange, gravity louvers and/or anti-mosquito screen.
Standard colors are white, silver, and aluminum (color).
Sizes and meshes depend on market requirements.