Beadboard panels are available in a 4x8 size with 1 1/2 standard groove spacing. Other groove spacings can be easily provided upon request. Panels are available in 3/16, 1/4, 5/16, 3/8, and 1/2 thickness. Other thickness and sizes may be available as required. Plain MDF Beadboard is designed to be painted and is also available with an optional water-based prime coat.