Beaufort Aluminium Windows Technical Specifications

The sizes detailed below are for guidance only, if the sizes you require are less than the minimum or exceed our maximum recommended sizes - please ask our technical department for advice.

Recommended Sizes - Top Hung
Min. Width (mm)350
Max. Width (mm)1250
Min. Height (mm)350
Max. Height (mm)1400
Max. Weight (kg)50
Recommended Sizes - Side Hung
Min. Width (mm)350
Max. Width (mm)650
Min. Height (mm)350
Max. Height (mm)1250
Max. Weight (kg)50

Window Performance

Curved /
U Value
2400 Pa

Energy Rating


These Aluminium Windows meet Doc. L of the building Regulations by achieving a Window Energy Rating of 'B'. The above statistics apply for: Double-glazing, 90% argon filled Swiss V spacer bar (low-E, en=0.05, soft coat), 20mm or more ( U Value centre Pane - 1.221 W/MēK Glass, g = 0.74 *). Please ask our technical department for information on U-Values, as it will differ depending on your chosen frame, vent and glass. ** Please ask.

Specifying - Suitable Applications

  1. Can be specified for domestic and light commercial applications.
  2. Meets building regulations for new build. (For Oct 2010)
  3. Meets building regulations for replacement and refurbishment projects. (For Oct 2010)
  4. Excellent weather performance/ratings in accordance with the requirements of British Standards (BS6375, Part 1: 2004).

Key Profile Dimensions

Outer Frame Depth (mm)58 or 70
Sash Depth (mm)58, 63 or 65
Glazed Sealed Units (mm)28
Projection Cill Height - Optional (mm)25
Head Extension (mm) - Optional20
Deep Head Height (mm) - Optional73
Transom / Mullion (mm) - if Required57 - 102
Fixed Lites (mm)43 or 53
Openers & Dummy Vents (mm)65 - 76

Please Note: Your actual sight-lines will depend on your chosen vent and outerframe combination. For more details see our Section Identification. Please view this document and / or call 01268 571055  for more information.

Technical Manuals - Downloads

  • View/Download Section Identification (Technical Drawings of Profiles, Combinations & Section sight-lines)
  • View/Download Bay Details (Cills, coupling bars, bay poles and corner post technical drawings)
  • View/Download Measuring Advice (How to take odd leg measurements - instruction sheet)
  • View/Download Glass Safety (Glass safety guidelines - where you must use safety glass)
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(Canvey Island, Essex)
01268 571055

Renovation and Home Design