A Planet drop-down seal is in fact an automatic sealing system.
This system is grooved in the door from the bottom or assembled laterally, namely in one- and double wing/folding doors without doorstep made of wood, metal- and glass doors, industrial doors and sliding doors as well.
The Planet is tight against:
- Action of light
- Cold and heat
- Smoke and fire
As soon as the door becomes closed the control knob (fig. 1) is pressed against the frame on the hinge side and this action releases the sealing system to the floor. When the door is opened the control knob and the spring are discharged which raises the sealing system and the door can be opened without trailing on the floor (fig. 2).
|Fig. 1, Door Closed
||Fig. 2, Door Open