The (Duo-)UHW50(-BW) and UHW40 can be used in both “open” and “closed” hollow walls. The HWD40 is especially well suited for use in a “closed” hollow wall. The HWD50, HWD50S and HWD50L(-BW)can only be used in an “open” hollow wall.
Whichever solution you choose, the installation of all types is quick, simple and efficient. With the correct circular saw, optimal installation is ensured.