The METU 4-bolt connection system for the easy and fast and assembly of rectangular ductwork was one of METU's main innovations which rapidly became a worldwide industry standard. Our profiles and corner pieces are still considered today to be one of the sturdiest in the market.
Four criteria affect the performance of your air-ducts, as not all rectangular connections are created equal:
Any leaks increase the energy consumption, the generation of noises
and influence negatively the air-quality.
The profile deflection influences the the efficiency and integrity of the system,
its applications range and the appearance of the installation.
Weak Corner Pieces
The corner piece strength influences the air-tightness of the assembly, the required number of clamps and the required number of supports.
A gap between the profiles influences the air-tightness of the connections,
the appearance of the installation and the required number of clamps.