Specification History

Select termination fitting:

that is appropriate for regional weather conditions and installation location

with an integrated collar at least the same diameter as the exhaust duct outlet

with an integrated pest screen with holes no less than 1/4" and no greater than 1/2", except for dryer terminations which will have no pest screen

for kitchen exhaust: made from galvanized steel, stainless steel, or copper

for dryer exhaust: that is designed for dryers exhaust and does not include a pest screen

in very cold climates: that have no backflow dampers or use backflow dampers that resist freezing

Appropriate, safe, and weather resistant termination