Includes incidental assembling, glazing, or mfg. of special sizes. Applicable only to concerns that buy and sell finished millwork exclusively (including incidental assembling or glazing or incidental mfg. of special sizes), such as finished flooring, doors, frames, sash, screens, moldings, baseboards, stair trim, columns, paneling, cupboards, shelving, or furniture such as kitchen cabinets, ironing boards, breakfast sets, window seats, mantels, wall cabinets, or cases.