Eliminator Lighting EL-BLK400 400 Watt lamp for EBK-400. The EBK 400 utilizes a metal halide lamp or discharge lamp. It features a large crimson thick glass housing outdoors having a metal frame within it that holds another smaller sized glass bulb in position. the lamp doesn’t come installed so a person must install the lamp. The metal frame does rattle inside. Unless of course the outer glass is really damaged it’s alright to install the EBK 400 lamp in to the fixture.