The LumeSun is a small, yet extremely efficient reflector. It is computer designed to put out a very uniform square light pattern. The internal reflective surface is made from AlumaBrite, a highly reflective imported aluminum. The socket assembly and 15' lamp cord is built into the reflector. It comes complete with tempered glass and 4'' removable air-cool fittings. It will accomodate all bulb sizes except BT-56. It measures 21.25" x 10.5'' x 6.75''. Length including cord: 23". Add 2.25" to each side when using fittings.