Knob one sided fixed STERK KVADRAT 1705 F5 - matt black

Product Description

STERK brand stands out, thanks to high fabrication standard, great material quality and at the same time, attractive price. Models have simple and universal design which match perfectly to every interior. STERK handles are equipped with double, self-leveling metal springs, handles are mounted to door on metal adapters as well. Such attention to details guarantees comfortable usage of every pair.

STERK products passed fire resistancy test (PN-EN 1634-1+A1:2018 standards). 30 minute examination has confirmed fire protection rating related to load integrity and insulation, which means that handles can be used on door rated EI30 fire resistancy. 96 hours of salt spray test resulted in achieving level 3 corosion results.

Knobs were tested according to PN-EN 1906:2012 standards and achieved the highest possible rating of "usage" (4) and level 7 of durability, exceeding 200.000 test cycles. Handles have achieved hygienic certificate as well.

STERK handles are perfect for living, office or public spaces.

*class meaning:

1. Category of use: 4 - high frequency of use, often violent

2. Durability: 7 - 200.000 test cycles

4. Fire resistancy: 1- suits fire and smoke doors

6. Corrosion resistance: 3 - high resistance (96 hours salt spray test passed)

8. Type of use: A - spring assisted

Each set contains:

- 1 pc. Knob; combined with a metal mounting rosette (so-called mounting adapter);

- 1 pc of a cover 9 mm thick; - a knob with a cross-section of 8x8 mm;

- 2 pcs. M4 through bolts;

- 1 pc. Allen screws and a 3 mm Allen key;

- a set of wood screws (on special request).

One-sided knobs intended for assembly with a handle. When ordering, please specify the side of the handle: right (R) or left (L).

Knobs are dedicated to door leaves with a maximum thickness of 43 mm. If you require a knob in a different version or an assembly kit for thicker doors, please leave the relevant information along with the leaf thickness in the comments to the order. Then the assembly kit will be adapted to your needs.

New product, manufacturer's warranty 60 months.