Laboratory Exhaust Duct Material
Lab exhaust may require special materials like stainless steel or coated duct.
What You Might Be Looking At
ductwork connected to laboratory fume hoods or chemical exhaust systems
Apprentice words: lab duct, chemical duct, fume hood pipe, special exhaust
Trade terms: laboratory exhaust duct, fume hood duct, corrosive exhaust duct, specialty exhaust
Check First
What Not To Do
Don't use standard galvanized for corrosive exhaust. Don't assume lab exhaust is the same as general exhaust.
What can go wrong: Corrosion, duct failure, chemical leakage, safety hazard, code violation, expensive re-work
Better Foreman Question
For this lab exhaust, what duct material and joint type does the spec require? Is standard galvanized acceptable?
Verify With
Reference type: project specs, ASHRAE
Source to verify: ASHRAE Laboratory Design Guide, project specification Section 23 35 00
Safe wording: Lab exhaust materials depend on chemical use, project specs, manufacturer compatibility, and EH&S/AHJ direction. TinnerFlow should only trigger verification.