NVC Emergency Lighting LED Bulkhead is suitable for commercial interior use in corridors, stairs, toilets and changing rooms. It is also widely used in corridors, but the IP54 rating makes it suitable for bathrooms and toilets too. Delivering up to 89 luminaire lumens per circuit watt, it is also very efficient and qualifies for an Enhanced Capital Allowance (ECA). Special polycarbonate micro-prismatic controller contributes to the high efficiency of the PORTLAND. Rather than rely only on opal material to diffuse the light the PORTLAND uses micro-prisms on the inner face of the cover.