BFRC Rating The BFRC are quite possibly the most reliable window and door Power overall performance assessors in the united kingdom. A++ Power score A+ Electrical power rating A Power score B Vitality score BFRC Ranking The BFRC are quite possibly the most trustworthy window and door Vitality performance assessors https://www.apptape.co.uk/blog/dec-advantages-of-window-tinting-films/