CircoBoard panels were fitted flush on the angle brackets supplied between the joists before installation of the finished floor. CircoBoard is one of six floor construction options available from CircofloPro. Its unique two-, three- or four-port ‘universally versatile’ minifolds can be installed in a variety of ways with the standard fittings supplied, and the 12mm pipe supplied in lengths of 50, 70 or 90m for the ultimate in efficiency.