The SF-70 system is distinguished by: Flush-mounted and overlaid profiles. Upper profile in natural aluminum. Lower profile in natural aluminum, or lower profiles in anodized aluminum with gold, black or natural finish.
The SF-150 system is distinguished by: Flush-mounted and overlaid profiles. Upper profile in natural aluminum. Lower profile in natural aluminum, or lower profiles in anodized aluminum with gold, black or natural finish. Minimum gap between the leaf and the profile. Nylon wheel with ball bearing.