To give a little perspective to this review it relates to a new private extension and included two bi-folding doors, one four doors: one three doors with a triangular section for gable end, two sets of French doors and two windows. All aluminium finished in graphite grey. The initial measurement and site inspection was very comprehensive and detailed using some interesting laser measuring equipment to check squareness and levels. Due to the size of the installation, it spanned several days and on each day the team of two installation fitters arrived on time, they were polite and friendly for the duration and as this was during the Covid-19 period worked within these guidelines. The very impressive aspects were the attention to detail the fitters gave to every stage ensuring everything was sealed; aligned and square and the number of fixing bolts used. By the end of installation handover all the rubbish had been removed, the class and frames given a full clean and a great job done. It was a pleasure to have such a profession team working on-site.