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. …
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. …