From the moment you complete an online enquiry form, through to quotation, manufacture and delivery, Alpine offer an exceptionally fast turnaround on supply only bi fold doors. All our bi fold doors are manufactured and hand finished in our specialist factory in Leeds, West Yorkshire. adjoining our head office. Given the facility is integrated alongside our customer service team and showroom, the process from quotation to delivery is seamless and slick, ensuring minimal delays and a streamlined turnaround timescale. You can be assured however that quality isn’t sacrificed – with all parts ‘Alpine Approved’, only the finest standards leave the premises. Should you opt for the supply and fit service, timescales are extended slightly to incorporate a site-survey, but will be expertly fitted and accompanied by a 15 year guarantee.