The Speakman Sentinel Mark II Shower Valve line is designed to provide high quality anti-scald pressure balanced protection. Speakman Sentinel Mark II Valves feature an independent center sleeve which allows up to 1 In. of roughing in variation. Temperature can be adjusted through the temperature limit stops and the valves have a ceramic temperature regulating module. Sentinel Mark II valves feature polished chrome plated brass trim with a metal index plate and are vandal resistant. Sentinel Mark II valves provide superior protection down to 2.0 GPM. The SM-3020 features a metal lever handle for easy operation. The SM-3020 includes an S-2280 wall mounted showerhead. The SM-3020 is certified to meet ASSE 1016 and ASME A112.18.1/CSA B125.1 standards.