The specifications detailed below are for guidance only. If you have any queries please ask - for example if the sizes you require are less than the minimum or exceed our maximum recommended sizes. Duration bifold windows come in many different colours and finishes, from standard white and silver anodised to woodgrain effects and RAL colours. You may also have your window in a dual-colour - where the inside and outside colours are different e.g. black outside and white inside.
Window Performance | |
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Complies
Regulations 600
Air
Permeable 600
Water
Tightness 2400
Wind
Resistance These statistics apply for: |
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