Fenestral installs INOX Guides in all aluminum sliding frames (INOX metal sheet), at the bottom of the sliding frames. Also, guides with rubber (not simple ones) in the rest of the frame. This way, the sliding frames move more easily, the rollers are not damaged, and their lifespan is extended.
Additionally, the guides of the sliding frames are not scratched, do not peel, and do not retain debris (there is a mechanism that removes it).
