Seal Class A/B/C

What seal class is this system and does it include penetrations?

I'm checking seal class a/b/c at [location]. I found Under-sealing a high seal-class run; fails leakage test. What seal class is this system and does it include penetrations?

Rectangular Duct & Fittings 2nd Year YELLOW

Stop if

Hold point on seal class a/b/c: I have the location, photo, drawing/detail/spec section, and what I checked. Who should verify before this gets cut, drilled, covered, supported, labeled, connected, or signed off?

Watch out

Skip longitudinal seams on class A

Check

room/grid/area
photo of condition
drawing/detail/spec/submittal
what I already checked
what is blocking progress

Say this to your foreman

14534 seal class a/b/c rectangular duct yellow 2 what seal class is this system and does it include penetrations? i'm checking seal class a/b/c at [location]. i found under-sealing a high seal-class run; fails leakage test. what seal class is this system and does it include penetrations? seal class seal class, seal class a/b/c, transverse/longitudinal/penetrations