Holbein Water-Based AC Board F10 (Set of 19) These boards are coated with water-based paint to be compatible with acrylic paints. The regular price is 9,350 yen (including tax) for a set of 10, so this time it's about 17,700 yen (including tax) for 19 boards. Size: F10 (530mm x 455mm) These are new and unused, but they have been stored at home, so please refrain from purchasing if you are concerned. I would appreciate it if you would purchase all 19 boards together.