IFT certification from the Rosenheim Institute...
KELLER minimal windows® 4+, enable architects to create; larger, taller and more thermally efficient sliding glass doors with triple glazing. However, the impressive innovations of this system can now go even further.
The successful and improved performance IFT certification from the Rosenheim Institute for burglar resistance and sound insulation widen the applications of these minimally framed doors.
The burglar resistance ‘WK’ (Widerstandsklasse) designations were replaced with ‘RC 2’ (resistance class) for the UK market and the KELLER minimal windows® 4+ has successfully met the criteria for frame, fittings and glazing for RC2. Compliance with class RC 2 automatically includes compliance with class RC 2 N, both classes are mentioned in the test report. The RC 2 certification for minimal windows® 4+ enables architects to create a secure slim framed sliding glass doors which is also aesthetically pleasing and can be incorporated into many different designs.
sound reduction innovation
The sliding doors were tested to EN 1627 to ensure protection against forced entry.
The KELLER minimal windows® 4+ sliding-fix construction (4,190 x 2980 mm) were tested for sound insulation.
The large sliding doors (3,100 x 4,000 mm and a weight of 993 kg per leaf) are currently being tested at our own premises – showing no signs of wear on the carriage and rail system or on the drive with the KELLER MOT2000.
The endurance test is presently continuing
- RC 2 “Increased protection for normal housing security”
- Sound Reduction Index of 43dB
- 34,610 complete opening cycles
This increased testing puts our minimally framed sliding glass doors – minimal windows® 4+ – to the test and the results prove their incredibly high quality and the impressive technologies used within the fabrication process.
Minimal windows® have been used on numerous contemporary home offices in gardens, providing the all-important separate space for work using large minimal framed sliding glass doors at the forefront of the design.
Are you interested in using the minimal windows® 4+ system? Visit our contact page to get in touch with our UK partners for a quotation and specification advice.