Designed for use only with Direct-Vented gas-fired appliances that comply with “ANSI Z21” Standards.
International Building Code
NFPA 54
UL 2112
Flue Material Specifications:
4" & 5"/.012, 430 stainless steel
Casing Material Specifications:
4" & 5"/.018, galvanized steel
Refer to appliance manufacturer for installation specifications