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Whats the difference between Hoffman 75 and Hoffman 45

acl10
acl10 Member Posts: 349
in THE MAIN WALL
Whats the difference between Hoffman 75 and Hoffman 45

Comments

  • nicholas bonham-carter
    nicholas bonham-carter Member Posts: 8,578
    One is small, and the other is very small.
    Both are too small for any real steam venting.—NBC
  • Jamie Hall
    Jamie Hall Member Posts: 24,856
    The Hoffman #75 is intended as a main vent; it's a bit faster than a Gorton #1. The #45 is more of a radiator vent.
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
    johnshanahan

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