Medite Ultra MDF by Roseburg is designed for critical machining applications, such as raised panel doors, says the company. It is manufactured in Pembroke, Ontario from 100% Canadian softwood chips and features a consistent surface and core, suitable for machining, painting or laminating, adds the company. Medite Ultra panels are available in 4’, 5’, and 6’ widths and up to 16’ length, in thicknesses ranging from 1/2” to 1”.