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EPIC FAIL! 12 Gage Welded-steel Grease Duct Fails UL 2221 Internal Fire Test!

Most codes require unlisted grease ducts serving Type I hoods to be constructed of 16 Gage which we’ve seen fail before. So, we decided to test a grease duct made to NYC’s more stringent requirements – 12 Gage. See what happens in our time lapse video. SLTNS Engineered Systems® represents grease duct manufacturers Duravent and Van-Packer.

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