This 4 ft. x 6 ft. Unframed Melamine Markerboard, manufacturered by Ghent, is listed with an MPN of 14UM46. hent's Verona melamine markerboards provide excellent writing and erasing qualities at a price that will amaze you. Non-magnetic Verona markerboards will provide years of reliable performance using dry-erase markers with the proper care. Verona markerboards are an economical alternative to Centurion porcelain-on-steel boards, yet durable enough to carry a full ten-year guarantee. - Frame: Frameless. - Height: 48. - Surface: Melamine. - Surface Color: White. - Size: 4' x 6'.