The SF-411D / SF-422D / SF-433D system offers: Rollers with four ball bearings. Vertical adjustment mechanism. Accessories for fixing to wall or ceiling. Roller with swinging system to overcome possible irregularities of the profile.

The SM-432D system is differentiated by: Vertical adjustment of the leaf. Rollers with four ball bearings, with swinging system to overcome possible irregularities of the profile. Wall or ceiling fixing.