The Trojan IHS12-D4 water filter system accepts the following replacement parts:
The Trojan IHS12-D4 - UV Water Disinfection System purifies drinking water in order to remove Cryptosporidium and Giardia, harmful bacteria like E.Coli, and viruses. The Trojan UV system is equipped with a high output UV lamp that treats variable water conditions and features a timer that indicates its annual replacement time. With the Trojan UV purification system, you'll also receive the benefit of two high flow filters that reduce dirt, rust, chlorine, and unpleasant tastes and odors.
Trojan IHS12-D4 - UV Water Disinfection System specifications: