BFRC Score The BFRC are the most trustworthy window and doorway Vitality efficiency assessors in the united kingdom. A++ Electricity rating A+ Power rating A Power score B Strength score BFRC Ranking The BFRC are the most dependable window and doorway Strength functionality assessors in the UK. A++ A+ A https://www.apptape.co.uk/blog/dec-advantages-of-window-tinting-films/