High quality electric grid fly killing units. Robust aluminium and UV stable plastic construction. Pre-installed powerful Philips UV bulbs attract flies. Staggered internal bulb mounting to create efficient UV light output. Improved reduction in energy consumption costs. Tools are required for bulb replacement. Suspension chains included. 2m power supply cable. Each unit uses 2 x bulbs. 425393DZ1 supplied with 2 x 8w standard bulbs installed, 425394DZ1 supplied with 2 x 15w standard bulbs instal