Flowbal Double-Trumpet Blower PFW-300 Flexible Duct PFW-300D Set Product No noticeable scratches or stains *Slight distortion in one place (see photo) Does not affect operation [For intake and exhaust in factories and piping work sites!] ●Both sides of the main unit are trumpet-shaped, allowing flexible ducts to be attached to both the intake and exhaust sides. [Applications] ●Air supply in manholes and tunnels ●Air supply as a ventilation fan that does not require duct work [Specifications] ●Power cord: 1.25mm2 x 3-core 2.6M [Remarks] ●Country of manufacture: China Detailed Information/Specs Power supply: AC100V Power consumption 50/60Hz (W): 420/560 Maximum air volume 50/60Hz (m3/min): 61/71 Maximum diameter (m/m): 330 Suitable duct (φ): 330 Noise level 50/60Hz (dB): 71/75 Weight (kg): 11.6kg Width x Depth x Height (mm): 315x380x417 ●Flexible duct with a single string. ●Ducts can be connected to each other for use. [Material] ●PVC tarpaulin [Specifications] ●Weight: Approximately 3.7kg ●Duct diameter x Length (mm x m): 320 x 5 ●Main body fabric thickness (mm): 0.28