A fitschen ring is a ring for the hinges the door through its use on a higher level, and remedy, when the door when opening too little ground clearance.
Fitschen rings can be used only with hinges, with which the door is hung.
For doors with 3-part bands are fitschen rings is not suitable.
The prerequisite for the use of fitschen rings is that the door to your top edge a sufficient gap to the upper part of the door frame.
This text is machine translated.