Honeywell Combination Gas Control, 24Vac, Step Opening, 3/4″x3/4″, Full Rate 3.5″ Water Column Pressure Regulator Setting, 0.9″ Water Column Step Setting, Natural Gas, 1/2 Psi Pressure Rating, 1/8″ Pressure Tapping with Plug, Standing Pilot, 0-90 Degree in Any Direction from Upright Position of Gas Control Knob, Including Vertically, 32-175 Degree Ambient Temperature Range, Includes Two 3/4″x1/2″ and One 1/2″x3/8″ Reducer Bushings