6770-5 Closer Plus Arm

About Norton Closer Arms
Most manufacturers make arms specific to certain models only. Norton has done us all a huge favor by making their arms ”universal”.One Norton Arm can be swapped from one model to the next (except the 78 series pot belly closer). This rule applies to all series of Norton surface-mounted closers.

The bad news is the arm model numbers are hard to remember. Norton didn’t help us any by assigning goofy models to their arms. Of course, you can try to memorize the arm models, but there is an easier method to keep track of them.