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Hybrid Series 2 Casement Window System

The Hybrid Series 2 are available as either 125 or 150 mm high performance window system which achieves very high thermal insulation values providing low U-Values.

Comprising the insulating benefits of timber on the inside and the durability of aluminium on the outside, the system includes top hung, side hung and fixed light combination windows.

Offers a clean symmetrical look, with aesthetically pleasing appearance, identical regardless of whether the window opens or is a fixed pane.


  • Constructed using mitred joints on both the aluminium and timber frames.
  • Using a mechanical corner joint on the aluminium frame and dovetail keys on the timber frame enables the frames to be constructed without the need for complicated production processes.
  • Integral transoms and mullions are inserted by scribing the ends and screw fixed to the frame.
  • A sealant is used on all metal joints, the timber mainframe sections are mitre jointed using a unique closed joint method.
  • Opening window frames are designed to be inserted directly into the outer frames using friction stays.

General information


As drawing ___

As schedule ___


Weather Rating tested to BS 6375-1:2009 achieving 600Pa air permeability, 600Pa water tightness and 2400Pa wind resistance; Able to receive glass and infill panels from 28 to 44mm thick depending on configuration; U-values as low as 0.90 W/m2K when calculated as a CEN Standard Commercial window


Aluminium alloy and timber

Uniclass 2015

Pr_30_59_98_15 Composite window unitsPrimary


L10/400 Composite windows

Specification data - Composite window units

Product Reference

Hybrid Series 2 Composite Window

Hybrid Series 2 Composite Thermally Broken Window



Side Hung Open Out

Top Hung Open Out


As drawing ___

As schedule ___



Timber frame

Matt lacquer

Internal frame/ sash section

Matt lacquered, colour ___

Water based paint

Insert colour requirements.

Aluminium cladding


Polyester powder coated, RAL

Insert details.

Standard product features


- External:

Extruded aluminium alloy 6063 T5/T6 to BS EN 755–9.

- Internal:

  • Purpose engineered profiles in spruce laminated timber (Scantlings);in principle without faults (knots and flaws).
  • Certificated to MPA Stuttgart with quality class BS1100, laminated according to DIN 1502 using weather proof and heat proof melamine glue.
  • Finger joints in outer layer minimum 500 mm centres.
  • Moisture content: 12% ±2%.
  • PEFC /04-32-0042 Certified.

Consult manufacturer for other timber species, special order.

Performance (Exposure category to BS 6375–1:2009):

  • Air permeability: 600 pa.
  • Water tightness: 600 pa.
  • Wind Resistance: 2400 pa.


  • 28 mm thick double glazing as standard (28, 32, 36 or 44 mm thickness for thermally broken windows).
  • A variety of glass options are available - contact Senior Architectural Systems Ltd for details.


Varies depending on type and size of window, average U-Values available are:

- Residential CEN standard (1230 x 1480 mm):

  • 28 mm double glazed unit: 1.40 W/m²K.
  • 44 mm triple glazed unit: 1.04 W/m²K.

- Commercial CEN standard (1230 x 1480 mm):

  • 28 mm double glazed unit: 1.27 W/m²K.
  • 44 mm triple glazed unit: 0.90 W/m²K.


Tested to PAS24:2012 and BS 6375-2 and -3, security hardware required.

Product Options

Typical sizes (w x h):

  • Top Hung Open Out: 1600 x 1600 mm.
  • Side Hung Open Out: 1000 x 1600 mm.
  • Fixed: 1500 x 1800 mm.

Colour/ Finish:

- Timber frames:

  • Matt Lacquered finish on spruce, 150–300 micron wet film thickness or water-based paint in any colour, consult manufacturer for details.

- Aluminium cladding:

  • Available in any polyester powder colour.
  • Anodized finish is also available.

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