Pipe Bracket for ventilation pipe

This is a bracket for flexible air tubing with 75 mm outer diameter, for example for Heinemann Valloflex Round Pipes. It can be installed at a wall with one screw in the middle.
The tubing just snaps in and is hold safely in every direction.

Compatible tubing see:
http://www.heinemann-gmbh.de/de/wohnraumlueftung/valloflex-luftverteilsysteme.html