Certain items that have upholstered backrests, etc. are done by installing the upholstery with nails through the face of the material. Items that require this nailing process include any woven fabric up to Grade #6 at no additional charge. Fabrics will diminish the appearance of pin holes left by the nailing process. M. Deitz and Sons, Inc. will not use a vinyl for these items as the pinholes will be apparent. If a vinyl is required for the upholstery our nail trim or double welting options will need to be ordered. Consult the specific item for the cost (if any) to have these options applied.