Available with numerous valve options, including fire-rated options, Water-Tite MultiBox™ System can be installed as single-box system, easy-to-connect 2-box system, or 3-box system including Studor® Air Admittance Valve. MultiBox washing machine outlet box can house both valves and drain in same box. For system with separate valve and drain boxes, MultiBox valve box can be optionally piped to drain-waste-vent system to capture any hose leaks.