Norsound’s NOR400 Edge letterplate is fire resistant up to 60 minutes. It achieves this by utilising the Norseal intumescent liner that comes supplied wrapped around the inner sleeve of the product.
The NOR400 Edge has also passed stringent durability measures. It has been salt spray tested up to 480 hours - which follows the European standard BS EN 1670: Grade 5. Use this letterplate with a restrictor piece or security cowl (optional extras) to comply with PAS 24. It has also been cycle tested for use up to 20,000 cycles.
The letterplate is suitable for doors from 40-80mm in thickness.
All models come with a black border casing, with a flap finish available in gold as well as satin and polished chrome. Bronze, graphite, black, antique black, white and silver are also available via special order.