Johnson Controls GRD10A-601 Guard Els PW 17895 always verify your model number

always verify your model number for HVAC part compatibility

A 40 VA transformer can typically handle the boiler’s internal controls and one or two low-draw zone valves

for low-pressure steam up to 15 psi

reducing labor time during field service calls

Johnson Controls GRD10A-601 Guard Els PW 17895 always verify your model numberProtect sensitive HVAC controls from tampering and physical impact with the Johnson Controls GRD10A 601 Guard. This heavy duty cast aluminum thermostat guard is designed for high traffic commercial and industrial environments where standard plastic covers fail. The unit features a solid baseplate for secure mounting to flat surfaces or standard electrical boxes, providing a professional grade barrier for thermostats and humidistats. Its durable silver