Abstract: An apparatus for assembling a louvered window or door fitting structure comprises first and second spaced apart style guides in parallel relationship to one another, dowel receiving members to the inside of each style guide and a motor for moving at least the first style guide towards the second style guide while maintaining their parallel relationship to clamp the styles to the louvers of the louvered window or door structure. The dowel receiving members guide the dowels on the louvers into the openings in the styles as the structure is clamped by the style guides. The motor then moves at least the first style guide away from the second style guide to allow releasing of the structure from the apparatus.