LSE Lighting Combo Package 40W UV Bulb and Quartz Sleeve for Emperor Aquatics 02040 Combo package kit: Includes the following: 1 bulb and 1 quartz sleeve Lamp type: UV ultraviolet, sleeve type: Quartz glass, base type: 4 pin (4 pins on one end) Brand: LSE lighting This combo package kit by (LSE lighting brand) is 100% compatible replacement for use with emperor aquatics 02040 All lamps/quartz sleeves listed are compatible brand (LSE lighting) UV products, we do not sell emperor aquatics UV brand lamps/quartz