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Single 90 Connection

The Single 90 Connection command inserts a diffuser connection that extends perpendicular to the selected duct, then turns 45 degrees to connect to the selected diffuser.

To insert a single 90 connection, go to
Ribbon: DM HVAC→Diffuser Connections→  Single 90 Connection
Pulldown Menu: DM HVAC→Diffuser Connections→Single 90 Connection

You will be prompted to specify the diffuser to be connected.

Select diffuser to connect:

You will then be prompted to specify the duct to which the diffuser will be connected.

Select duct or label at connection point:

Select the duct at the location where the connection will be made. The duct will be broken at the selected point. A duct that is perpendicular to the selected duct will be inserted and connected to the selected diffuser.