The exhaust system can quickly exhaust the smoke, particles, and odor generated by the 3D printer during operation, keeping the indoor air fresh. The exhaust pipe uses a heat- and fire- telescopic hose, which can be used for long-distance ventilation and smoke exhaust, convenient storage, and space saving. It has a wide range of applications and is easy to install. It can be directly installed at the exhaust fan position behind sealing printers such as 2.4 and Trident, and can also be used for exhaust on the dust cover of 3D printers or laser engraving machines. Applicable models: for 2.4, for 2.4 R2, for Trident or sealing machine (design your own machine interface), 3D printer dust cover, etc. Printing link: https://.thingiverse.com/thing:6714103 Installation video link: https://..com/watch?v=YgVvLO0Pj6M Colour:Black Material:Nylon cloth + steel wire Type:with FAN Package Contents: 1 x Exhaust System Kit 1 x fan Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.