- Easy installation and maintenance
- Good insulation by rubber strip attached to the upper and lower borders of the wall opening
- Anti-negative pressure for smoother opening and closing
- More competitive with a lower price
A slide door for the tunnel inlet allows for a larger opening, allowing for efficient control of air inlets in a tunnel ventilation system. It can be opened, and closed according to ventilation requirements, with accurate adjustment of the opening amount. A simple, effective and low cost solution for your ventilation needs.
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