STERK Kvadrat 1708 Door Handles – Durability and Functionality for Everyday Use
STERK Kvadrat 1708 – Universal Design for Modern and Classic Interiors
STERK Kvadrat 1708 Door Handles have been designed for users who expect durability, comfort, and an attractive door fitting. Their simple, balanced form blends perfectly with both modern and classic interior styles.
The Kvadrat 1708 model is ideal for houses, apartments, offices, and public buildings, providing lasting durability and an attractive appearance for many years.
Durable Construction and Proven Technical Solutions
For years, the STERK brand has been delivering products manufactured to high-quality standards. The use of durable materials and refined engineering solutions ensures reliability and long-lasting comfort.
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 solid mounting system ensuring long-term stability
The Kvadrat 1708 model complies with the PN-EN 1906:2012 standard, achieving:
• usage category 4
• durability exceeding 200,000 cycles (class 7)
• corrosion resistance class 3
• operation type A – spring-assisted mechanism
The product also holds a hygiene certificate, making it suitable for facilities with heavy traffic.
Certified Fire Resistance and Corrosion Protection
STERK Kvadrat 1708 Door Handles have been tested in accordance with PN-EN 1634-1+A1:2018 and are suitable for installation on EI30 fire-rated doors.
Testing confirmed 30 minutes of fire integrity and insulation performance. Additionally, a 96-hour salt spray test demonstrated a high level of corrosion resistance corresponding to class 3.
The model is suitable for residential buildings, offices, hotels, schools, and other public facilities.
Smooth Operation and Everyday Comfort
Double self-leveling springs combined with metal mounting adapters ensure smooth operation and reliable performance throughout years of use.
Key advantages:
• smooth and quiet operation
• high resistance to intensive daily use
• stable mounting over many years
• durable metal components
• quality confirmed by tests and certifications
What Is Included in the STERK Kvadrat 1708 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 allows for quick installation and many years of reliable operation.
More information: https://door-handles.com/