L.M. MONTICELLI is an Italian Company, specialized in manufacturing die cast joints for the windows and doors Industry. Our corner keys are characterized by high quality and technical innovations to guarantee the best junction of any aluminum profile in any degrees cut. We look forward to put our 50 years experience at your service to improve your way to assemble any window, door or curtain wall profile. No more screws or welding or any outdated extruded corner key can compete with the quality of an aluminum corner assembled with our state of the art die cast corner joint.