BFRC Rating The BFRC are one of the most dependable window and doorway energy performance assessors in britain. A++ Strength ranking A+ energy ranking A Strength rating B Strength rating BFRC Ranking The BFRC are essentially the most trusted window and door Electricity overall performance assessors in the UK. A++ https://www.apptape.co.uk/blog/dec-advantages-of-window-tinting-films/