Do you have a door closer that says, “Listed Door Closer Body 615R”, if you do you probably have an International Door Closer. This is the UL number, which is a testing laboratory. UL stands for Underwriters Laboratory, which started…
Do you have a door closer that says, “Listed Door Closer Body 615R”, if you do you probably have an International Door Closer. This is the UL number, which is a testing laboratory. UL stands for Underwriters Laboratory, which started…