A clever 250 x 250mm square up-light that can just sit on the floor and shine up. Use it to create soft ambient reflected light from a perimeter wall where you are unable to core into the concrete. It can also be mobile if you do not want to have it there all the time. Made from a patented material called Durcoral which is virtually indestructible and totally inert to moisture and salt. It is ideal for any outdoor or indoor application. It can also be walked on or sat on.