Vertical sliding secondary glazing has been designed especially for the secondary glazing of sash windows.

Secondary glazing for sash windows mirrors the primary sash window – it consists of two secondary sashes, one above the other, with each being securely retained in their own outer frame.

Sight lines of the secondary double glazing for sash windows match a traditional sash window, and each secondary sash is easily released for opening by way of the factory fitted side shoot bolts, which then re-engage in pre-positioned keeps for variable ventilation.

Inner panels are easily removable to allow access for cleaning and maintenance. Suitable for Listed Building sash windows, Conservation Areas and all other properties with sash windows.

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