Heat shrinkable wall feed through tubing.
UE-WFTT consists of a galvanized steel spiral over which a longer heat-shrinkable tubing is installed.
The resulting corrugated spiral surface acts as a labyrinth- like path to obstruct moisture flow between
the feedthrough and the wall. An external coating of special primer further improves adhesion to
various types of concrete. The steel spiral makes the feed through rigid enough to permit installation
during initial concrete pouring.