STERK Kvadrat 1704 Door Handles – Durability and Reliable Everyday Performance
STERK Kvadrat 1704 – Functional Design for a Wide Range of Interiors
STERK Kvadrat 1704 Door Handles have been designed for users seeking reliability, comfort, and an attractive door hardware solution. Their clean geometric form allows them to complement both contemporary and classic interior styles.
The Kvadrat 1704 model is an excellent choice for houses, apartments, offices, and public buildings, providing a practical and long-lasting solution for interior doors.
Proven Quality and Solid Construction
The STERK brand has remained committed to high manufacturing standards for years, using quality materials that ensure long service life while maintaining excellent value for money.
STERK Door Handles feature:
• double self-leveling metal springs
• handles permanently integrated with metal mounting adapters
• a durable construction resistant to intensive daily use
• a stable mounting system designed for long-lasting performance
The Kvadrat 1704 model complies with PN-EN 1906:2012, achieving:
• Category 4 of use
• durability exceeding 200,000 operating cycles (Class 7)
• Corrosion Resistance Class 3
• Type A operation – spring-assisted mechanism
The product also holds a hygiene certificate, making it suitable for areas with high traffic.
Fire Resistance and High Corrosion Protection
STERK Kvadrat 1704 Door Handles have been tested in accordance with PN-EN 1634-1+A1:2018, allowing installation on EI30 fire-rated doors.
Testing confirmed 30 minutes of fire integrity and insulation, while a 96-hour salt spray test demonstrated high corrosion resistance, achieving Class 3.
These properties make the model suitable for residential buildings, offices, hotels, schools, and other public facilities.
Long-Lasting Comfort in Everyday Use
The combination of double self-leveling springs and robust metal mounting adapters ensures smooth operation and dependable performance throughout years of daily use.
Key benefits include:
• smooth and quiet operation
• high resistance to intensive daily use
• stable long-term installation
• durable metal construction
• quality confirmed by certified testing
What Is Included in the STERK Kvadrat 1704 Door Handles Set?
The set includes all components required for installation:
• pair of handles (left and right) integrated with metal mounting adapters
• 2 cover rosettes, 9 mm thick
• 8 × 8 mm handle spindle
• 2 M4 through bolts
• 2 Allen screws
• 3 mm Allen key
The complete set enables quick installation and years of reliable performance.
More information: https://door-handles.com/