Fereastră PVC KF520 Studio — Triplu, Passivhaus

Internorm KF520 Studio PVC window — innovative design with PassivHaus-certified thermal efficiency and triple glazing for superior energy performance.

The KF520 Studio range from Internorm exemplifies the perfect synthesis of structural innovation and contemporary elegance. High-grade PVC profiles ensure durability and minimal maintenance requirements, with a finish that preserves its premium appearance throughout its extended lifespan. This model stands as a benchmark solution for modern residences and selective renovation projects.

The triple glazing of the KF520 Studio is engineered with meticulous attention to thermal and acoustic performance. Each chamber is optimised to minimise heat loss, achieving a Uw value of up to 0.63 W/(m²K) — a specification that confirms PassivHaus compliance. Sound insulation ranges from 33 to 46 dB depending on installation location, delivering substantial protection against external noise without compromising aesthetic refinement.

Exceptional thermal performance is complemented by robust security and resistance characteristics. RC3 burglary resistance class ensures protection against break-in attempts, whilst the integrated I-tec Secure system incorporates advanced locking mechanisms. The triple glazing provides enhanced structural resistance to wind loads and external pressures, transforming the window into a dependable barrier against climatic challenges.

Studio design distinguishes itself through clean lines and balanced proportions that integrate seamlessly with both classical and contemporary architecture. The 520 mm profile depth permits installation of expansive glazing units, creating generous apertures that maximise natural light transmission. The PVC finish can be tailored to diverse aesthetic preferences, and the modular system supports an extensive range of dimensions and configurations.

KF520 Studio is particularly recommended for passive house construction, energy-efficient renovations and regions with severe winter conditions. Investment in a PassivHaus-certified window yields rapid financial returns through reduced heating consumption, whilst comfort benefits — absence of draughts, elevated surface temperatures — are experienced immediately. For property owners who prioritise energy efficiency, security and longevity, this represents a market-leading choice in PVC fenestration.

The Uw coefficient measures heat loss through the window—lower values mean better insulation. At 0.63 W/(m²K), KF520 Studio meets PassivHaus standards, delivering significant long-term savings on heating and cooling. The triple glazing and warm spacer technology are key to this superior thermal performance.

The triple glazing in KF520 Studio delivers significantly better thermal and acoustic insulation than any double-glazing option. This is the standard for passive houses and net-zero energy buildings (NZEB) where heat loss through windows must be minimized. If you're in a climate with harsh winters or want to reduce energy consumption to a minimum, triple glazing is a worthwhile investment.

RC3 is a break-in resistance class that withstands attack attempts with common hand tools (screwdrivers, pliers) for at least 10 minutes. The KF520 Studio with I-tec Secure uses multi-point hardware and reinforced triple glass to offer high protection—ideal for properties in urban areas or isolated homes. It's not military-grade, but it provides effective deterrence and significant delay.

The Rw range of 33–46 dB means the KF520 Studio significantly reduces external noise, with higher values for configurations with inert gas (argon/krypton) and optimized profiles. At 46 dB, heavy traffic noise is perceived roughly like normal conversation. Triple glazing and the air gap with gas between panes contribute strongly to this superior acoustic performance.

KF520 Studio allows full custom sizing and installation tailored to your space. The PVC profile can be adapted with various sealing and fastening systems, and installation is performed using specific kits on masonry or existing frames. Colors and finishes can be chosen from the Internorm palette, with options for integrated solar protection and insect screens. We recommend on-site consultation with a specialist for precise measurement.

The PVC profile of KF520 Studio requires simple maintenance: regular cleaning with water and neutral detergents, periodic lubrication of mechanisms, and seal checking. Internorm's high-quality PVC resists solar expansion and UV damage due to advanced stabilizers, doesn't crack easily, and deteriorates slowly. After 15–20 years, seals and gaskets may need replacement, but the profile itself remains functional. Avoid abrasive products and extreme heat exposure.