BFRC Ranking The BFRC are the most trustworthy window and door Strength performance assessors in britain. A++ Vitality score A+ energy rating A Vitality rating B Strength score BFRC Ranking The BFRC are essentially the most dependable window and doorway Electrical power overall performance assessors in britain. A++ A+ A https://www.apptape.co.uk/blog/dec-advantages-of-window-tinting-films/