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Polish sliding sash windows manufacturers use state-of-the-art methods of timber impregnation and varnishing, ensuring excellent protection and beautiful appearance of the wooden frames for many, many years. Double-glazed units filled with argon gas and 2 gaskets with extended lifetime provide good acoustic insulation and thermal comfort in the rooms. The use of a swisspacer  increases its excellent thermal properties even further by eliminating thermal bridge. Strong  profile structures made of three-layer glued laminated timber, a 156 mm deep window frame and modern fittings and accessories - all this makes modern sash windows functional, warm and safe.