Question about you 81-143 dual roller assembly

A contractor from Laguna Beach CA says:

Working on a property where a number of the doors have failed rollers. Feel pretty confident that it is your 81-143 roller. Question I had is trying to make sure that this does have the two screws holes for securing it to the rails (hard to see in the picture) and whether you like steel or plastic rollers for a property located close to the beach (I seem to usually like steel, but corrosion is an issue.

Profile picture of Tom
Tom from SWISCO responded:
Thanks for posting! Our 81-143 actually comes with a Nylon Roller option, which you can select before check out. As for the screw holes, you can see a close up picture of their location here:
A SWISCO example of hole locations.
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)