What do I check for finish work: flex final connection to diffuser box?

The final flex connection must deliver air without kinks, crushed bends, sag, torn vapor barrier, or pulling the diffuser out of alignment.

Stop if

• This flex route is tight and may kink near the diffuser. Do you want a hard elbow, box move, shorter route, or different support?

Watch out

• Stop if the flex is crushed, unsupported, too tight to service, or routed through another trade's access/clearance zone.

Check

• Keep the run as direct as the field allows.
• Avoid sharp bends right at the neck.
• Secure inner core and outer jacket per project/manufacturer direction.
• Support flex so it does not sag into lights, grid, or sprinkler work.
• Leave damper access usable for TAB.

Steps

• Keep the run as direct as the field allows.
• Avoid sharp bends right at the neck.
• Secure inner core and outer jacket per project/manufacturer direction.
• Support flex so it does not sag into lights, grid, or sprinkler work.
• Leave damper access usable for TAB.

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