Box Sash
Box Sash Windows product specification
Firstly, Box sash windows, otherwise known as the double hung sliding sash. This features traditional weights, heavy duty pulley wheels and pre-tensioned nylon cords that won’t break or stretch.
These windows offer authentic period styling and typically would be set back in a ‘rebated reveal’ so that the box is mostly hidden by the external brick or stone. It can also be seen positioned close to the face of the brickwork with the box visible and dressed with an architrave.














Our Conservation range is suitable for most projects and can be tailored to suit design requirements using our various glazing bar and moulding options. All of our Conservation range products have the ability to meet modern building regulation standards.
Glazing
24mm DGU
Standard Specification
24 mm Double glass unit comprising 4 mm Tough / 16 mm Argon / 4 mm Tough Planitherm Total+
14mm DGU
Standard Specification
14 mm Double glass unit comprising 4 mm Tough / 6 mm Krypton / 4 mm Tough Planitherm One
4mm Single
Standard Specification
4mm Single Toughened Pane
Glass Specification Options
There are many alternative specifications available such as Acoustics, Laminates, Obscure and Solar options, please contact us to discuss your requirements.

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Technical Specifications