This is a very simple label for duct elements made with the MEP Modeler add-on. It's intended for use with any simple duct type, including Straight, Bend, Take-off, and the Obstruction Fittings (as far as I can tell). I'm using it solely for straight pieces, since no one is fabricating anything from my plans - I just want to coordinate
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Location: 15 Mech-Plumbing. A 2D symbol for HVAC supply, return, or exhaust fan. There is an optional label for the size, generated automatically from the height and width. The height and width snap to whole inches.