Aluminium Bi-Fold Doors (Folding Sliding Doors) In our opinion Aluminium is the best material to use for the manufacture of Bi-Fold doors as it gives strength and long life from a slim crisp looking profile. Aluminium Bi-Fold can be supplied to open inwards or outwards and with the left or right hand door being the main (first open) door. Alternatively you can choose to have the main door hinged to the frame and the other door leaves sliding away from the main door. For openings that are split into more than 3 sections the door leaves can be split 1 + 3, 2+2, 1+4, 2+3, 3+3 etc. They are supplied with the glass loose for installation and are made to measure to fit your openings. White or coloured finishes are available. The following doors are typical of the range and are based on the sizes shown. If you cannot find the door you require listed below please contact us on 01454 313135 or email info@kentsdirect.com for a quotation or to discuss your requirements in detail.