Home > Companies > Selectaglaze Ltd > Series 46 Fixed Light

Slimline fixed light (FL) secondary glazing which can be used in combination with other products as over lights or side lights and is suitable for arched windows. Can be used within partition walls as observation windows for laboratories, control rooms, clean rooms and recording studios. Can be shaped or curved to a full circle.

All fixings are concealed by cover channels within the frame, which may be linked to other frames with a colour-matched mullion/ transom section.

Will reduce heat loss by up to 50% using standard glass and up to 65% with a thermally efficient glass (low emissivity). Perimeter mastic seals will almost eliminate drafts and ensure much greater comfort near the window.


  • Acoustic: Tested in accordance with BS EN ISO 140-3: 1995 for acoustic performance: between 41 and 48 dB.
  • Thermal: U-values as low as 1.78 W/m²K (timber primary window and low-E glass in secondary glazing).


  • Security: Secured by Design (SBD) accredited.
  • ISO 16933 EXV 45.

Standard product features


- Material:

Extruded aluminium alloy 6063-T6.

- Style:




  • Sash, minimum (h x w): 300 x 300 mm.
  • Sash, maximum (h x w): 2200 x 1400 mm.
  • Curved head or jamb radius, minimum: 400 mm.

Thermal performance:

Values of <2.9 W/m²K available; consult manufacturer for details.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-25-99/310 Aluminium window units

NBS Specification

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This product is associated with the following NBS clauses:

Product specification

An important note about specifying



Selectaglaze Ltd


+44 (0)1727 837271

Product reference

Series 46 slimline fixed light (FL)


As primary window designs/ sightlines


[As drawing]
Insert details.
[As schedule]
Insert details.

Acoustic performance

[ ______ ]

Thermal performance

[ ______ ]

Blast performance

[Not required]
[ISO 16933 EXV 45]

Physical performance

[Not required]
[Secured by Design]


 - Finish:
[Anodizing, Analok bronze AA25]
[Anodizing, Analok silver AA10]
[Polyester powder-coating, HIPCA 9910 semi-gloss white]
[Polyester powder-coating, RAL]
Insert RAL colour.
[Wood grain effect]
 - Gloss level:
[Not required]
[High gloss]


 - Type:
[Laminated, low -E]
[Toughened, low-E]
 - Thickness:
[4 mm]
[6 mm]
[6.4 mm]
[6.8 mm]
 - Gasket:

Trickle ventilators

[Not required]
[Over the frame acoustic ventilator]
[Over the frame standard ventilator]

Acoustic reveal linings

[Not required]
[Vinyl faced acoustic foam]

Manufacturer details

Alban Park,
Hatfield Road,
St Albans,
Hertfordshire, AL4 0JJ
Tel +44 (0)1727 837271
Fax +44 (0)1727 844053
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