Sandwich Boards (A-Frames)
A typical steel a-frame is 2’x3’ and is 8.5 lbs., however other sizes are available. They allow for changeable inserts, usually using corrugated plastic sheet. A stronger insert option would be aluminum composite sheet, which can also be used as wet-erase (on black) or dry-erase (on white.) Chalkboard vinyl overlay is also available, as another option.