LSE Lighting Combo Package Compatible UV Bulb 1324 and Sleeve 1333 for Gamma 1403 Included in the package: 1 UV Bulb and 1 Quartz Sleeve Bulb Length: 33 1/2", Quartz Sleeve Length: 35" (domed at One End) This Combo package of 1 UV Bulb and 1 Quartz Sleeve by (LSE Lighting) brand is 100% compatible for use with Gamma 40W 1403 Ultraviolet Sterilizer Gamma brand names, trademarks and logos are property of Current USA Gamma