Full-size segmented collar saddles allow fabricating round duct branches at the ductwork points that can only be defined when the main ventilation ducts have been installed. The collar saddle is installed by cutting an opening to match in a spiral or plain duct and fastening the piece with rivets or self-drilling screws.
The joint edges need to be sealed with a silicone or acrylic compound. This product is specifically recommended for branching systems that require air tightness class D according to EN 12237.
This is the only saddle that allows fabrication of offset branches with the branch duct diameter larger than the main pipe
