4.6.3 VERTICAL TERMINATION
4.6.4 CLASS A CHIMNEY RETROFIT
Vertical Cap
24"(610mm)
Ceiling Support
Floor Protection
Vertical Cap
Storm Collar
Class A Chimney
Ceiling Support
Floor Protection
Storm Collar
Roof Flashing
Vent must maintain
3"(76mm) clearance to
combustibles.
3"(76mm)
2"(51mm)
Outside air (Recommended)
(Installation showing inlet of out-
side air in ventilated crawl space)
Roof Flashing
Vent must maintain
3"(76mm) clearance to
combustibles.
3"(76mm)
2"(51mm)
Outside air
(Recommended)
(Installation show-
ing inlet of outside
air in ventilated
crawl space)
17
EN
W415-1477 / A / 10.19.16