they do not come with a socket or cord or ballast box you would have to purchase all those seperately and by then you would be better off just buying a complete light system with reflector might check out the below websites.
Complete Digital/Electronic Systems
Grow Lights » HPS Systems - InsideSun
mylar is very thin and really needs some form of backing to attach the mylar to.
bejay Reviewed by bejay on . if i get this hps, what else do i need? so, looking around 1000bulbs seems to have the best prices on hps. i'm wanting a 250w for a small flowering room, mostly likely 2-plants at a time if i buy this 250 Watt HPS HID Light Bulbs Light Bulb then i need one of these 250 Watt High Pressure Sodium Rating: 5