Static field route #877

What do I do when forgetting duct stretcher/clamps for rectangular alignment?

Tools, Fasteners, Hardware & Material HandlingTools / hardware starter — verify approved material and method

If rectangular duct will not align, get the stretcher/clamps before the joint gets damaged.

Open in Field Rescue Open category

Field checklist

Check if the duct is out of square or wrong size.
Use duct stretcher/clamps where appropriate.
Protect corners and flanges.
Tighten gradually.
Ask if the piece may be wrong.

Ask foreman

Do you want the duct stretcher/clamps here, or is this piece wrong?

Do not

Do not beat or pry the joint until the flange bends or the seam opens.

Why it matters

Alignment tools keep the joint controlled instead of turning it into a fight.

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