Features: *ABS plastic have a good hardness and it is extremely lightweight. *It also have a good resistance of acid and alkali. *A design with thinner top and thicker bottom can make this vent much convenient to connect. *Internal arc design reduces wind resistance. *Widely used on bathroom or kitchen extractor fan, In-line extract fans or cooker hood Specifications: *Material: ABS Plastic *ColorBlack *Size100#,110#,120#,150#,160#,200#,250#,300# Package Content: 1 x Duct Connector Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.