This revolutionary friction fit seal increases acoustic performance of a standard fire rated door simply and effectively. Its design is based on dual air pocket technology which acts in the same way as double or triple glazing.
The NOR710SR also has smoke seal capabilities in accordance with BS 476: Part 31: 1983. It provides a continuous acoustic seal not broken by hinges or latches. We have cycle tested the NOR710SR acoustic seal up to an impressive 1,000,000 opening and closing cycles.
The NOR710SR has been developed to rout into the stop section of the door frame.
No. Since the NOR 710SR is a continuous acoustic seal it acts as a smoke seal, in fact in some ways acting better than standard intumescent smoke seals!
The NOR 710SR will fit into a standard kerf fitting of 3mm wide and 8mm deep into the frame.
Yes, due to the fitment position of this seal it is unaffected by standard door furniture.