The long-awaited addition to the ETC Source Four line is here! Using the proven HPL lamp technology, the ETC S4 7" Fresnel provides soft-edged area lighting with user-friendly controls, energy-efficiency, and superb build quality. Features an adjustable yoke, enclosed accessory slot (no light leak!), and easy-to-use focusing mechanism. Re-lamping is easy via access through a bottom door...no need to break focus to change lamps. As noted, uses same HPL lamp as other Source 4 fixtures.