- Cheltenham Factory Outlet is the retail arm of Tradeframe, one of the largest manufacturers of uPVC window, door and conservatory products in the UK. We make 30,000 windows a year from our state-of-the-art factory in Peterborough. 2012 marked TRADEFRAME's 30th Trading Year! Our customers range from bespoke window and conservatory retailers to national building contractors, and now, for the first time, the general public, who can benefit from our outstanding pricing and quality. We pride ourselves in the quality of our products, and our quality management systems extend to ISO 9001, British Board of Agreement, BSI and Secured by Design.

We also manufacture to A, B and C Energy ratings. If you have received your online quotation we believe that you will see that we offer highly competitive prices on our entire range of products. Please be assured that we are quoting you for products manufactured from the finest profiles, hardware and glass in the industry.