This wall mount bracket is for ProSeries 4 stage reverse osmosis system. It's a durable option if you're looking to replace an existing bracket or if you're setting up a custom project. Keep your water housings secure with this wall mounted bracket. It'll fit 4 stage reverse osmosis systems, if you have any questions about sizing or installation contact our customer service department, 1-888-309-2837 and we'll be glad to help you get the right product for your system.