The Pentek 150574 3G housing has 3/4" inlet/outlets.
The Pentek 150574 housing must be used with one of the two Pentek pressure gauges. The housing will not work if a pressure gauge is not used. The pressure gauge helps to determine when the water filters need to be replaced.
The Pentek 3G IB MM 150574 water filter housing has an integrated bracket so a separate bracket does not need to be purchased.
Connecting two #10 Standard Housings:
Two #10 Standard housings can be connected with a pipe nipple or pipe union. There are several pipe nipples available that can be used to connect two #10 Standard Housings. See all combinations of pipe nipple options here.
NP-34 - Use this pipe nipple to connect two #10 Housings with 3/4" Inlet/Outlets