Johnson Controls D-4073-6 Damper Actuator 30067439-890 the unit should be mounted

the unit should be mounted on a flat surface

internal motor bolts or housing screws may need to be retained from the existing assembly or sourced separately depending on the specific Lennox air handler model

Strap-on Surface Mounted Temperature Control with Concealed Range Adjustment

installing a switch with different set points can cause safety hazards or frequent equipment tripping

Johnson Controls D-4073-6 Damper Actuator 30067439-890 the unit should be mountedJohnson Controls D 4073 6 5 10 PSI Spring Range, 3" Stroke, 5 32" or 1 4" OD Barbed Fitting Air Connection, Pneumatic Piston Damper Actuator with Auxiliary Mounting Bracket