The NOR650 is part of the Norsound 600 range of threshold plates. This product is made from durable T6060 grade aluminium and anodised to the highest standard. The profile of the threshold is 14mm high, in order to accommodate a gasket strip which increases the acoustic performance of your door via dual air pocket technology. 

These threshold plates are made from durable aluminium and compliment the Norsound door bottom seals. They provide a level platform for the Norsound door bottom seals to locate against which ultimately leads to greater sound reduction. In the case of the NOR650, when put together with a drop down seal, this compliments the gasket already in the threshold plate, giving further acoustic performance to your door.