Easily accommodates larger pole mounts: round steel poles up to 9 in schedule 40 (9.625 in OD), square steel poles up to 10 in
Huge labor saver vs "stick building" large signs eliminates having to "stub" or telescope poles just to accommodate smaller sign frames, stronger frame for larger signs
Advantages of a larger frame but still miterable in most sign factories
Facilitates easier code compliance
Offers familiar EMS frame design advantages but now a larger frame
