The Genesis Vertical Sliding Window – A New Chapter

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When Bison Frames, the PVC-U window specialist received a request to provide windows that were destined for a grade II listed cottage, the company realised it could be on dangerous territory. In providing a solution, the Yorkshire based company looked long and hard at the existing vertical sliding sash window profiles supplied by Spectus Window Systems with a view to improving the vertical sliding window so that it would stand up to the scrutiny of the local planning officials.