Sample Letters and Track
Rigid letters are inserted in top track, pushed up, then in (flat against the sign), and dropped down into the bottom track. If the sign is overhead, this can be done with a “change pole”.
Flex letters are bowed out and slipped in top and bottom tracks. The track then “grips” the letter. This must be done by hand.
Flex track is about 1″ wide, Rigid track about 1 1/2″ - 1 3/4″ wide.