D Glass Aluk Optio 58BW Window System

The Aluk Optio 58BW  Casement Window System:

Product Description:

Strong, Secure, Superior.

Built to the highest UK standards, this effective and high performance solution offers clean lines and advanced functionality. Available with a range of customisable options, casement windows are the perfect choice for both traditional and contemporary 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.

■Internally or externally glazed.

■58mm or 70mm frame depth to accommodate.

■varying types of applications.

■Project in or project out options.

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

■Available in the following aesthetics: Bay, Chamfered, Heritage, Ovolo and contemporary.

■Available in the following configurations: top hung, bottom hung, side hung, fixed light, multi-light and French casement.

■Available for Lifetime Homes (LFT).


U value W/m²K (Double glazing).                                               1.4 W/m²K

U value W/m²K (Triple glazing).                                                  1.2 W/m²K

Window energy rating.                                                                B - C

BRE 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)



Secured by design.


Frame depth:                                                                                  58mm and 70mm

Dual color option.

Multi-point locking.

Glazing options.                                                                              Internal bead

Glazing thickness.                                                                           24mm - 40mm

Sightline (Frame to Vent).                                                              75mm

Sightline (Vent to Mullion).                                                            89mm

Sightline (Fixed Light).                                                                    43mm







58 CW Chamfered Cill Detail.

58 CW Chamfered Transom Detail.

58 BW Ovolo Cill Detail.

58 BW Ovolo Transom Detail.