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Aluminium casement windows

The system’s clean lines and advanced functionality meet the demands of almost every modern building construction. Its competitive pricing also makes it a highly popular choice with specifiers both in the UK and around the globe. Tested to PAS 24, the 58BW also holds a Green Guide ‘A’ rating.

Features & Options

Key Features

  • Tested to PAS 24
  • Green guide rated A
  • Integrated deep head profiles for ease of trickle ventilation
  • Unique polyamide thermal break design to improve thermal performance

Optional upgrades

  • 58mm or 70mm frame depth to accommodate varying types of applications
  • Opening in or opening out options.
  • Internally or externally glazed to accommodate low and high rise projects
  • Glazing 24mm – 40mm
  • Available in a range of single or dual colour and anodised finishes
  • Available in the following aesthetics: Bay, Chamfered, Square and Ovolo.
  • Available in the following configurations: top hung, side hung, bottom hung, fixed light, multi-light and French casement
  • Available for Lifetime Homes (LFT)
  • Double beaded option allowing for internal glazing without the use of dummy vents
  • Dedicated fixing straps for ease of installation
  • Designed with a Euro groove to accommodate standard locking hardware

Glass options

All of our windows have a choice of clear or a wide selection of privacy glass options from traditional to contemporary. If you require any other glass options than please contact us.

How to measure a window


Outward opening

Performance and accreditation

U-value (double glazing) 1.4 W/m²K
U-value (triple glazing) 1.2 W/m²K
Window energy rating (WER) B - C
Green guide rating A rated
Acoustic performance (dB) Rw (C;Ctr) 42 (-1;-5) dB
Air tightness (Pa) Class 4 (600 Pa)
Water tightness (Pa) Class 9A (600 Pa)
Wind load (Pa) Class E2400 (2400 Pa)
Security PAS 24
3rd party certification Q-mark


Opening Open out
Top hung
Side hung
Bottom hung
Fixed light
French casement

Size limits

Top hung (max weight) 180 Kg
Side hung (max weight) 55 Kg
Bottom hung (max weight) 60 Kg (3 hinges)
Fixed light (max weight) 250 Kg

System features

Frame depth 58mm and 70mm
Dual colour option
Multi-point locking
Glazing options Internal and external bead
Glazing thickness 24mm - 40mm
Sightline (Frame to Vent) 75mm
Sightline (Vent to Mullion) 89mm
Sightline (Fixed Light) 43mm



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