Check that the S/slip is seated, drives are fully seated, ends are finished, corners are closed, sharp edges are controlled, sealant is correct, and support is not pulling the joint open.
Confirm piece mark, size, airflow, and connector sides
Seat the S and drive cleanly
Check corners, support, gaps, and sharp edges
Ask foreman
In Rectangular Duct Assembly: S-and-Drive, I’m looking at: What should I check after the S-and-drive joint is installed? What should I verify before I cut, drill, seal, cover, move, or install?
Do not
Do not use force, screws, tape, or mastic to hide a bad mechanical fit.
