MANG M-M are male couplings in galvanized steel which allow connecting round spriral ducts or round plain ducts with inner joints. The piece is installed by pressing both ends into the ducts to be joined, up to the stop in the middle of the male coupling. Next, the male coupling needs to be fastened to both ducts with self-drilling screws or rivets.
Couplings with gaskets which won't requiere an additional sealing.
In stainless Steel.