Patio doors are principally available in 3 styles, sliding, French or bifolding.  Each style has their own pros and cons and were are happy to advise which may best suit your personal needs.  sliding and French doors are available in UPVC and aluminium, with bifolds being aluminium only.  All are available in a range of standard and bespoke, made to measure sizes in different styles, choices of glazing and in many colours.  They can be matched with glazed side and top panels too.