Stunning Aluminium Bi Folding Doors from Bi Folding Door Prices, Design, Price and order instantly online. Available with 12 months 0% finance, either professionally fitted or for DIY. Choose from 2-7 Panel designs in a range of stock colours, bespoke RAL colours are also available. We are the bi fold door experts and we are here to help. #bifold #bifoldoor #bifoldingdoors #aluminiumbifolds #concertinadoors