Sterling shower door models 660 and 690 went through a design update. Refer to the images below to determine if you have the old or new style of door.
New Standard 660/690 Door Images:
Old 660/690 Door Images:
The beveled v-shape on the top track design was maintained from the old to new.
New Standard 660/690 Door Images:
Old 660/690 Door Images:
The panel framing was refreshed and now matching the same beveled styling as the top track.
New Standard 660/690 Door Images:
Old 660/690 Door Images:
A new Thunder Grey center guide replaced the old white version.
The new guide controls the door movement and allows less wobble.
New Standard 660/690 Door Images:
Old 660/690 Door Images:
The new version has a back plate for smooth feel and better ergonomic grip.
New Standard 660/690 Door Images:
Located on the bottom track, these caps will cover up the tracks if a miscut error occurs.