Ratchet mount mechanism
The Filter Fan Plus has four ratchet braces, one located in each corner of the filter fan. The ratchet braces were especially developed for this filter fan series, and we have even submitted a patent application for this mechanism.
The ratchet mount mechanism prevents possible deformation of the enclosure wall by pulling the mounting frame to the wall. This is a new approach compared to conventional filter fan systems where the mounting frame is usually pressed onto the enclosure wall using strong force. The braces lock solidly into one of the 6 notches of the ratchet wheel ensuring secure positioning of the mounting frame. When the ratchet mechanism draws wall and mounting frame together, the filter fan is uniformly sealed via the integral sealing gasket on the mounting frame resulting in a secure and stable installation.
The ratchet braces are pressed from the outside. When pressing them, the installer hears the clicking sound of the brace locking into place in one of the 6 notches and is assured that the filter fan is installed securely. If there is a necessity to do so, the ratchet braces can be re-opened using a screwdriver. Thanks to the 6 stages of the ratchet, the mount mechanism of the Filter Fan Plus is suitable for wall thicknesses from 1 to 4 mm.