uPVC Windows Cwmbran. MPN Windows offer CWMBRAN A-Rated uPVC Windows as an approved company suppliers installers and fitters for Veka Products as a member of Independent Network National installers for Veka in Cwmbran CF44 and county borough of Torfaen to the boundaries of Monmouthshire, South Wales. Get a buy now quote price and cost for uPVC Windows Cwmbran.