While optimized as a two-position steam valve body

95" WC Calibration: Fixed setpoint prevents ignition failure caused by inaccurate draft readings in condensing units

A standout feature for technicians is the manual purge lever

Precise Sensing: -0

Bulk Efficiency: Supplied in a 10-pack (10PK) to provide technicians with ready inventory for multi-zone HVAC service sets

Schneider Electric (Barber Colman) AT-1104 Guard Els PW 17895 While optimized as a two-positionThe Schneider Electric AT 1104 is a heavy duty cast aluminum thermostat guard designed to protect wall mounted controls in high traffic commercial or industrial environments. Built with a steel base plate for rigid mounting, this guard prevents physical damage and unauthorized setpoint adjustment, a critical requirement for maintaining HVAC system efficiency. With internal dimensions of 4 1 4" H x 3 1 2" W x 1 5 8" D, the AT 1104 is specifically