TDC Corner Assembly

Gasket is on one flange face and the duct is close but not perfect at the corners. Do you want drift pins/C-clamps to line it up, standard cleats, or 5/16 self-tappers in the flange if cleats are not available?

I'm checking tdc corner assembly at [location]. I found rectangular duct with TDC rails, figuring corner connection. Gasket is on one flange face and the duct is close but not perfect at the corners. Do you want drift pins/C-clamps to line it up, standard cleats, or 5/16 self-tappers in the flange if cleats are not available?

Rectangular Duct & Fittings 1st Year YELLOW

Stop if

Hold point on tdc corner assembly: I have the location, photo, drawing/detail, and what was checked. Who should verify before this gets cut, covered, lifted, sealed, energized, or signed off?

Watch out

Do not put gasket on both sides. Do not use corners, bolts, drift pins, or C-clamps to drag a crooked duct run together. If cleats are missing, ask before using 5/16 self-tappers in the flange.

Check

room/grid/area
photo of condition
drawing/detail
manufacturer/model if visible
what I already checked

Say this to your foreman

14300 tdc corner assembly duct assembly, seams & joints yellow gasket is on one flange face and the duct is close but not perfect at the corners. do you want drift pins/c-clamps to line it up, standard cleats, or 5/16 self-tappers in the flange if cleats are not available? tdc corner, ductmate corner, flange corner, gasket one side, drift pin tdc, c-clamp tdc, self tappers flange, no cleats tdc tdc corner, transverse duct connector corner, corner lock metal corner piece, duct corner, rail end, tdc clip