Quartz Glass Tube Cover for UV Bulb compatible with the following AQUATOP products:

Aquarium Filtration
FORZA FZ13 UV Canister Filter with 13W UV Sterilizer - 550 gph

Aquatop OEM Replacement Parts Policy
"Aquatop parts are designed and intended as original equipment replacement only for Aquatop branded products. Use in brands other than Aquatop can result in poor performance, leaks, and failure and Aquatop offers no warranty for any problem arising from the use of Aquatop replacement parts in another brand of product."