... Standard; 2. Easy Maintenance HQS-10A Filter Housings, domestic ro systems Material: 304L/316L body, stainless steel or brass ... 1/2'' or 3/4''Designs: 4 series including A, B, C, D style bottom, custom design also acceptableApplication: ... water treatment. Feature: simple installation, easy maintenance, against high temperature and pressure, long lasting HQS-10A filter housings, household water purifier ...