The 58BW Window System is a top-quality product that has been engineered to meet the highest standards in the UK. This system offers a cost-effective solution for residential and commercial projects, delivering impressive performance with narrow profiles. The clean lines and advanced functionality of the 58BW Window System make it an ideal choice for modern building construction.

The system is available in a variety of formats, including Top Hung, Side Hung, and French Casement, making it a versatile option for any building project. This versatility, combined with its competitive pricing, has made the 58BW Window System a highly popular choice with specifiers both in the UK and around the world.

In addition to its high performance, the 58BW Window System is also certified under Secured By Design and has been tested to meet PAS 24 standards. This means that it has been thoroughly tested for security and safety, providing peace of mind for homeowners. The 58BW Window System also holds a Green Guide ‘A’ rating, making it an environmentally friendly option for building projects.

In conclusion, the 58BW Window System is a cost-effective, high-performing, and versatile solution for residential and commercial projects. With its narrow profiles, advanced functionality, and competitive pricing, it is an excellent choice for specifiers looking for a top-quality window system. The 58BW Window System’s certification under Secured By Design and its Green Guide ‘A’ rating further demonstrate its commitment to security, safety, and sustainability.

Design Features

Certified under the Secured By Design scheme

Tested to PAS 24

Integrated deep head profiles for ease of trickle ventilation

Unique polyamide thermal break design to improve thermal performance

Casement system sightlines to match the Tilt Before-Turn window sightlines

Reverse rebate option for internal glazing throughout


Available in two frame depths: 58mm or 70mm

Supports both open-in and open-out projects

Internally or externally glazed to accommodate low and high-rise projects

Glazing 24mm–40mm

Available in the following configurations: Top Hung, Side Hung, Bottom Hung, Fixed Light, Multi-light and French Casement

Available for Lifetime Homes (LFT)

Dedicated fixing straps for ease of installation

Designed with a Euro Groove to accommodate standard locking hardware

Smoke vent certification compliance to EN12101-2:2003 Annex G

Available in single or dual colour polyester powder coating, texture and anodised finishes