With a precision-engineered 6

back out the adjustment screw

making it an essential item for any direct vent furnace repair kit

it is commonly utilized in Reznor unit heaters

Common Questions: What units is this orifice compatible with

White Rodgers F29-0143 Clear Plastic Guard With a precision-engineered 6Secure your climate control settings with the White Rodgers F29 0143 Clear Plastic Guard, a heavy duty solution designed to prevent unauthorized tampering in commercial and residential HVAC applications. This universal thermostat guard serves as the professional grade direct replacement for UG 2A and UG 2C models. Built from high impact, UV stabilized plastic, the F29 0143 features a transparent housing that ensures the display remains fully visible