Good: Economy hardboard, low-cost alternate that performs admirably with dry felt markers. White acrylic surface on 1/4″ or 1/2″ hardboard. See trim page for available framing. Take care not to scratch or use abrasive cleaners. Maximum size without divider 8′ x 4′. Best: Porcelain steel whiteboards have a glass-smooth, non-porous writing surface. Steel-based whiteboards can be used in combination with magnets and the surface can double as a projection screen. “Write-on, wipe-off” marker pens are available in a wide variety of colours. These pens can be easily erased with a standard eraser or cloth, leaving no traces of dust or smudges. Maximum size without divider 12′ x 4′. Colours: white only. This high quality whiteboard combines every advanced feature of modern porcelain enameling technique. By carefully controlled methods, the enamel is applied automatically to a uniform thickness and fired under rigidly controlled temperatures to fuse the porcelain permanently to the steel. This produces a colorfast and highly scratch and stain resistant surface with unexcelled writing and erasing qualities.