The Speakman Lifesaver SE-237 Ceiling Mounted Horizontal Emergency Shower is an emergency deluge shower unit with wall recessed activator. The showerhead is supplied with a 1 In. NPTF stay-open full flow ball valve that is activated by pull handle that is recessed inside wall cabinet. The SE-237 is compliant to the ANSI/ISEA Z358.1 standard & OSHA.