MDF
Medium-density fiberboard (MDF) is an engineered wood product formed by breaking down hardwood or softwood residuals into wood fibers, combining it with wax and a resin binder, and forming panels by applying high temperature and pressure. Available in thicknesses of 2 or 3mm. Because it is a heavy material we recommend it for small frames. In combination with back loading aluminum frames, it will permit fixing springs to it.