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Thresholds For The Bi Fold **PLUS** Door Range

The bifold plus range of folding doors are a revolutionary desgin, with a concealed track and a low pvc threshold as standard, with the option of a level aluminium threshold, designed for both open in and out doors. You will need to consider the overall threshold height when measuring your door, so that you can benefit from the lower threshold details. The two CAD images below show dimensions for the pvc and aluminium threshold. Click on the relevant links for your chosen threshold to show open out, in and buried enlarged printable images. Standard UPVC thresholds are fully weather rated. Low thresholds do not offer the same weather performance and should only be used subject to our terms and conditions.