Type 4181, 10000W Molequartz baby tener solarspot studio fixture is designed for Quartz tungsten-halogen globes. More compact and lightweight aluminum housing with high performance. 14" Fresnel condenser mounted in front opening door. Choice of Fresnel condenser, hot lens (narrow angle) or cold lens (wide angle). Accessories fit in wide diffuser clips on front door with no light obstruction. Crank handle on rear for focusing. Molecool® locking knob on yoke. Equipped with safety screen.