UL Listed Door Closer, we have written about these before, but we get so many inquires about so and so number Listed Door Closer I thought it might be a good time to revisit it. The following is an explanation…
UL Listed Door Closer
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Posted in Door Closers
Posted in Door Closers
Listed door closer 236N is probably a Corbin or Russwin closer
Do you have a Listed door closer 236N? If you do you probably have a Corbin Russwin Door Closer. The sticker or stamping usually says Listed Door Closer Arm 236N. This is the UL number, which is a testing laboratory. …
