Hangzhou Meansoon Ventilation Co., Ltd.  

Product Name: 4 Inches 100 Turbo Inline Duct Fans for Ventilation Model NO.: TDF100 Certification: RoHS, CE, CCC Mounting: Duct Fan Electric Current Type: AC Type: Exhaust Fan Blade Material: Plastic Material: Plastic Trademark: MEANSOON Transport Package: Cartons Specification: 100 Origin: Hangzhou HS Code: 8414599099 Product Description 4 inches 100 turbo inline duct fans for ventilationIt is a real turbo fan, with turbo blades, lead to higher pressure than normal duct fans.But it have small volume, good for impact space.