Hose Vary 4 inch Duct Exhaust Fan, Exhaust Intake Fans, ABS Lightweight 2-Speed Inline Fan w/Removable Stand US Cord for Laser Printer Booth, Attic, Kitchen, Garage, Basement (2-Speed)

QUICK RELEASED HOLDER: The 4 inch Duct Exhaust Fan fan is based on the traditional ducting mini fan, who added a quick released stand with buckle. You can DIY the fan into any pipeline or as a use of desktop fan.

HIGH / OFF / LOW MODE: Wired with a speed button controller and US 2-flat-pin power adapter. Plug and play, freely switch to any speed the environment needs.

REMOVABLE CHECK VALVE: Especially designed with a check valve, can be removed if you don't need. Automacitically close when the fan stop running, protects the air flow from backward.

HIGH PERFORMANCE: High mode performance: Power: 8W; Speed: 2550RPM; Noise: 26dB; Air Flow: 120m³/h(70CFM); Low mode performance: Power: 5W; Speed: 1900RPM; Noise: 20dB; Air Flow: 90m³/h(52CFM). Waterproof: IP45; Working voltage: 110V~127V / 60Hz.

4-INCH DUCT COMPATIBLE: The duct fan can be used in home HVAC pipeline system to help ventilation better; To build a simple and mini ventilation system with your 3D laser printer box, spraying box, or any other small boxed-size experiment.