Internorm KF520 Window | Minimal Frame | Maximum Performance

The Internorm KF520 is sleek, Modern and Contemporary. Its integrated and patented Itec locking means that its also one of the most secure and burglar resistant window systems available on the market today. The frame design on this windows means that with some clever detailing the external of the frame can be almost completely concealed and hidden, giving a frameless look with outstanding levels of performance.

Internorm KF410 Window | Passivhaus Suitable | Triple Glazed | Ultra Efficient

The Internorm KF410, Triple Glazed Tilt & Turn Window has long been one of the most popular windows for Passive House applications. Extremely Energy Efficient, Available in a wide range of finishes and with some of the best security credentials around this window system is also budget friendly manufactured in both UPVC and UPVC Aluminium clad.

Internorm KF510 Window | Triple Glazed | Slim Sightline | Ultra Secure

The Internorm KF510 is the newest product in our range. This ultra slim product has all of the same common features as our other Internorm products, But with an ultra slim external profile inside and out, integrated and fully concealed locking and its fully customisable inside and out, with a wide variety of Mock Timber and RAL finishes. The products aluminium cladding externally means that product will stand up to the most extreme of climates without the need for maintenance.

Internorm KF310 Window | Budget Friendly | Triple Glazed | High Performance

The Internorm KF310 is the most budget friendly product in our offering with U Values as low 0.62 and its available in a wide range of finishes. This extremely customisable product has fast become our most popular window system for new, self and custom build projects over the past 5 years and is more than suitable for Retrofit applications also.