D Glass Aluk Optio 58BW TBT Tilt Before Turn Window

Aluk Optio 58BW TBT Tilt Before Turn Window System:


Product Description.


Innovative, versatile, intelligent. Offering exceptional child safety and seamless operation, our tilt before turn windows are an ever-popular choice with homeowners. Made from high performance aluminium these sustainable systems are inherently strong and lightweight, making them ideal for both commercial and residential designs.


Design Features:


Certified under the Secured By Design scheme.


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.




Glazing 24mm – 40mm.


Available in a range of single or dual colour and anodised finishes.


Available in the following aesthetics: Bay and Contemporary.


Available in the following configurations: tilt-beforeturn, side hung and multi-light.


Available for Lifetime Homes (LFT).




U value W/m²K (Double glazing). 1.5 W/m²K


U value W/m²K (Triple glazing). 1.3 W/m²K


Window energy rating. B - C


BRE Green Guide rating. A Rated


Acoustic performance (dB). Rw (C;Ctr) 44 (-1;-4) dB


Air tightness (Pa). Class 4 (600 Pa)


Water tightness (Pa). Class 8a (450 Pa)


Wind load (Pa). Class E2400 (2400 Pa)






Secured by design




Glazing options. Internal and external


Glazing thickness. 24mm - 40mm


Sightline (Frame to Vent). 86mm


Sightline (Vent to Mullion). 100mm


Sightline (Fixed Light). 43mm






Aluk Optio 58BW Tilt Before Turn System

Aluk Optio 58 BW Tilt Before Turn Contemporary Cill Detail

Aluk Optio 58 BW Tilt Before Turn Cotemporary Transom Detail

Offices at:


Bristol Exeter Plymouth Yeovil

Showroom & Design Centre Opening Hours:


Monday to Friday: 9.00 am till 5.00 pm


Saturday: 9.00 am till 12.00 am

Tel: 0800 888 6150

Trade Counter & Workshps Opening Hours:


Monday to Friday: 8.00 am till 5.00 pm.


Saturday: 9.00 am till 12.00 am.


D Glass is the complete design, supply, and installation solution for Windows, Doors, Conservatories, Curtain Walling, and all forms of Glazing requirements. The complete glazing solutions company, for all of your projects, in the Commercial, Trade, New Build and Architects Specified Projects sector. D Glass undertakes projects throughout the South West.

Copyright: D R Jones (Yeovil) Limited. T/A D Glass.