Hi, I´m Christian,
is there any manufaktur /company with a winterization hatch for a Canadian Pacific RS3 in HO?
http://www.miniaturesbyeric.com/itm00079.htm
The CP RS-3 were phase 3 versions, the only actuall model was made by Stewart (Bowser.com). You can convert a phase 1 (Atlas or Athearn) to a phase 3 with parts from Miniatures By Eric (http://www.miniaturesbyeric.com/index.htm) .
Jay
C-415 Build: https://imageshack.com/a/tShC/1
Other builds: https://imageshack.com/my/albums