The Pura 15820121 filter system accepts the following replacement parts:
The PURA UVBB-2 Dual 5-Micron UV Filter System - 110v purifies and disinfects water to make it cleaner and bacteria free. This whole house UV water system features a 5 micron filter that effectively reduces sediment and other contaminants to improve the taste and clarity of your water. This UV water system features a 22 watt UV bulb and a 15 gallon per minute flow rate. In addition, this UV Big Boy Series system features a mounting rack configuration for utilizing up to four UV chambers.
PURA UVBB-2 Dual 5-Micron UV Filter System - 110v specifications: