Fast flanged system for rectangular ductwork union based on assembling frames formed by TDC profile and cornerback.
It serves to form, along with cornerbacks, rectangular and square flanges that fit into the mouths of the ducts.
Cornerbacks that fit perfectly into the TDC DUMONT profile, 4 are needed to form a flange.
It serves to tighten flange to flange.
It includes screw grade.