Before Treating Industrial Duct Like Normal HVAC

Use for dust collection, fume exhaust, welded/heavy-gauge/high-negative-pressure duct, and specialty exhaust.

The duct is industrial, heavy gauge, welded, stainless/aluminum, dust/fume exhaust, high pressure, or not normal comfort-air duct.

Stop if

• Ask anytime industrial/specialty duct has material, support, access, weld, slope, pressure, or safety requirements you are not sure about.

Watch out

• Do not assume normal duct screws/mastic/tape apply.
• Do not guess gauge, reinforcement, or support spacing.
• Do not cut/weld/grind without safety controls.
• Do not ignore cleanout/access requirements.

Check

• System label
• Joint/flange
• Support detail
• Access/cleanout/conflict

Steps

• Identify the system and approved construction method before assuming normal duct rules apply.
• Confirm system purpose: dust, fume, industrial exhaust, kitchen/grease, process, or comfort air.
• Check material, gauge, joint type, reinforcement, supports, access, slope, and cleanout requirements.
• Check if welding, flange hardware, gasket, sealant, or special material handling is required.
• Look for safety hazards: sharp/heavy material, hot work, corrosive residue, dust, or confined access.
• Take photos of labels, joints, supports, and conflicts.
• Ask before modifying, drilling, cutting, sealing, or substituting hardware.

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