Home > Companies > Selectaglaze Ltd > Series 40 Fixed Light

Fire-rated, fixed light (FL) secondary glazing unit, suitable for use with thicker glass and sealed units; provides 30 minutes' fire integrity with Pilkington Pyrodur™. Suitable for use where access for cleaning needs to be considered.

Provides enhanced acoustics when used with thicker glass.

Units are available in straight, curved or fully circular profile with concealed fixings. Frames may be linked to other frames with a colour-matched mullion/ transom section or purpose designed timber mullions where a 30 minute fire rating is required.

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 greater comfort near the window.


  • Thermal: U-values as low as 1.15 W/m²K in combination with the primary window and glazed with enhanced sealed units.
  • Acoustic: Up to 50 dB (Rw) reduction dependent on glass and cavity.


  • Secured by Design accredited.
  • Blast tested to ISO 16933 EXV 33.
  • Fire tested to BS EN 1364-1, BS EN 1363-1 - 30 minutes' fire integrity.

Standard product features


- Material:

Extruded aluminium alloy 6063-T6.

- Style:




- Fire rated:

  • Minimum (h x w): 616 x 284 mm.
  • Maximum (h x w): 2805 x 1477 mm.

- Standard:

  • Minimum (h x w): 300 x 300 mm.
  • Maximum (h x w): 3000 x 1500 mm.

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

Fire-rated fixed light (FL) secondary glazing unit


[As primary window designs/ sightlines]
[Fire rated]


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

Acoustic performance

[ ______ ]

Thermal performance

[ ______ ]

Fire performance

[Not required]
[To BS EN 1364-1, BS EN 1363-1 30 minute fire integrity]


 - 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:
[Between glass blinds]
[Heated glass]
[Sealed unit]
[Switchable privacy]
 - Thickness:
[10 mm]
[24 mm (sealed unit)]
 - Gasket:

Trickle ventilators

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