All of the Pura systems will use one of the 3 bulbs listed below.
UV #10 Fits UV1 EPCB Unit and Add-on 1 Units - SKU#36002016
UV #11 Fits all UVB Units - SKU#36002017
UV #20 Fits all UV20, UVBB and Add-on 3 Units - SKU#36002018
All UV bulbs need to be changed annually and we offer a reminder program for this. Ask us to add your email to our reminder program when ordering and when a year passes we will email you so you don't forget to change your bulb.
Pura Owners Manual covers all systems and parts.