Veneer Doors Spence Veneer Doors can be manufactured to your specification; choose from a wide range of veneers, solid or hollow cores and optional edge strips. Doors are suitable for internal use only. All Spence Veneer doors are made to order so feel free to specify custom dimensions and materials. Will match edge strips to veneer as close as possible. Core Material: Any of the flush panel core material may be used. Frame: Hardwood or Finger Jointed Pine. Door Face Options See timber samples below Specify your own choice of timbers Substrate MDF 4 or 6mm, other available upon request. Plywood 3.6 or 6mm.