Characteristics:1 air return to the white ABS engineering plastics;2 circular, uncomplicated appearance, stylish lines;3 low noise;4 can be used for indoor air / exhaust,5 clean installation, would be installed in the ceiling or wall;6 and the three tooth socket supporting the use, can the entire disassembly and cleaning Package Include:1* Ceiling Air Vent Duct Grill Extractor 6inch