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A five-fold bolting, with 3 bolts and 2 swivel bolt locks, offer protection against unwanted vistors.
A thermally separated aluminium threshold is optionally available for renovation or new construction to avoiding condensate formation.
Choose out of a huge variety of handles and knobs - made of different high-quality materials.
Heavy installation hinges offer optimum fit.
Special welded corner connectors and additional steel brackets provide for an excellent torsional stiffness.