LSE Lighting Combo Package UV Bulb and Quartz Sleeve for Pura UV #20 Addon-3 UV20 UVBB Combo Package Kit: Includes the following: 1 Bulb and 1 Quartz Sleeve Lamp Type: UV Ultraviolet, Sleeve Type: Quartz Glass, Base Type: 4pin (4pins on ONE END) Brand: LSE Lighting This combo package kit by (LSE Lighting brand) is 100% compatible replacement for use with Pura UV #20 Addon-3 UV20 UVBB. All lamps/quartz sleeves listed are compatible brand (LSE Lighting) UV products. We do not sell Pura UV brand lamps/quartz sleeves.