The Think Booster A-Board is a double sided steel poster A-Board ‘boosted’ with a semi-circular header panel, which is ideal for vinyl application. Features anti-glare PET poster covers with magnetic seals which are excellent for poster security and weather resistance. Simply push poster cover out of frame via hidden release hole in back panel. Equipped with locking side arms for stability. Steel tube frame (25 mm diameter) and steel back panels.