Double Wall Flanged Joint System with Zero Clearance & Fire-Rated Enclosure
With 3.25” thick high density ceramic fiber insulation. Manufactured specifically
to achieve the UL 2221 two-hour fire-rated-resistant enclosure/duct assembly.
Ø6”- Ø36”. Two different specifications: One for Gas Vent; One for Grease Duct.
JI – sample spec – DWFL-ZC Gas Vent
JI – sample spec – DWFL-ZC Grease Duct