When we set out to design a sliding sash window, we knew we had to make something really special. Our Vertical Slider had to have the authentic appearance of a timber sash but none of the drawbacks. It had to be better than the original. We’re pleased to say we’ve done it, but don’t just take our word for it: the Spectus Vertical Slider is widely regarded as the best PVC-U sliding sash window there is.

Features Compatible with off the shelf hardware

Customisable to meet the highest security standards

Wide choice of colours and woodgrain finishes

and woodgrain finishes Trickle or glazed in vents

Standard or fully reinforced to Spectus recommendations. Dimensions A 128mm outerframe matches timber sash dimensions, making installation simple

Windows can be made up to a maximum size of 1600mm wide and 3000mm high

Large and small sash profiles give equal sightlines to the top and bottom sashes

150mm and 210mm cills

10mm/20mm/50mm frame packers.

Appearance Authentic ovolo shape to the frame, bead, sash and cill

Optional Georgian bars, sash horns, weather bars and a deep bottom rail designed specifically to provide that period look

Flush gaskets mimic traditional glazing

Approved by many planning boards, even for use in conservation areas. Energy Efficiency Designed to achieve a Window Energy Rating of Band ‘A’ with 24mm sealed units

Draughts prevented with pile seals to the sash and outerframe. Function Both sliding sashes can tilt inwards for easy cleaning

Smooth operating balance mechanisms.

Our Vertical Slider is Kitemarked to BS EN 12608, certified to PAS 24. We manufacture under a quality management system that conforms to BS EN ISO 9001 and are recognised for responsible sourcing under BES 6001.