Production, delivery and installation of internal spindles. The interior door is made with adjustable profiled shutters made of aluminum anodized profiles together with the necessary accessory to cover the full thickness of the walls. Door sash made of frame construction, made of combination of solid hardwood with extruded sound-proof particle board, MDF, fitted with appropriate fittings, locks and handles. Finished wooden parts and painted with polyurethane paints and varnishes. Manufactured and installed parapet window sills, finally painted and varnished with polyurethane covering paints and varnishes.