Emperor Aquatics Replacement Quartz
Sleeve for 18W Smart UV Sterilizers. 18 Watt Quartz Sleeve (Part#
20318, new style--Post 1998) (Fits Emperor Aquatics Smart UV
Sterilizer, Part# 02218. Will not fit older style Smart UV Sterilizers
with different part numbers.) The outside diameter of this Quartz
Sleeve is 1". Pre-1998 sterilizers have a different Quartz Sleeve
