For box sash windows
Traditional look with supreme functionality

Available in three different variations, our vertical sliding secondary glazing solution houses bespoke, self-supporting panes that remain in place at any chosen position. The range features a unique tilt-in facility that enables each secondary sash panel to be independently released from its outer frame and pivoted inwards through almost 180°. Also available as part of our Heritage product range, tilt-in vertical sliders can be made with heavy duty units and self-supporting panes for larger glass expanses.

Please note: On our new product range, the coating of our Low-E Glass is now located on the side of the window that faces into the room.

Secondary Glazing Illustration
Classic
Enhanced
Recommended maximum frame sizes (mm)
ProductWidthHeight
BVS1,500mm3,000mm
TBVS1,500mm3,000mm
SPBVS1,500mm3,000mm
Balance Capacity

Maximum area dictated by standard 50KG balance capacity or 65KG to special order.

Glazing Range

4mm

Frame Finishes

Standard White 9003 Satin.
Over 200 RAL Colours to choose from.

Recommended maximum frame sizes (mm)
ProductWidthHeight
BVS1,500mm3,000mm
TBVS1,500mm3,000mm
SPBVS1,500mm3,000mm
Balance Capacity

Maximum area dictated by standard 50KG balance capacity or 65KG to special order.

Glazing Range

6 – 10.8mm

Frame Finishes

Standard White 9003 Satin.
Over 200 RAL Colours to choose from.

Key Product Features
Aluminium Profile
Aluminium Profile
Slim, unobtrusive aluminium profile
Smooth-sliding
Smooth-sliding
Smooth-sliding action utilising spring balances to ensure ease of use
Tilt-in option available
Tilt-in option available
To allow for easier cleaning and maintenance access
Improved insulation
Noticeable improvement in noise and thermal insulation
Improved insulation
Suitable for arched applications
Designed with arched application purposes in mind
Suitable for arched applications
Can be coupled or stacked
Can be coupled or stacked with other units to treat larger areas of glazing
Can be coupled or stacked

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A colour to suit your scheme

Find the perfect match for your Granada window insulation system using our range of over 200 RAL colours. Whether you own a new build, listed property or commercial property, we can fit your requirement.

                                        
                                        
                                        
                                        
                                        
                                        
                                        
                                        
                                        
                                        
                                        
                                        
                                        
                                        
                                        
                                        
                                        
                                        
                                        
                                        
                                        
                                        
                                        
                                        
                                        
                                        
                         

Start your secondary glazing journey today...

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