Brand : Honeywell Part Number : C437D 2011 Description : Gas A/G/LP Pressure Limit Switch SPST 1/2 TO 5 PSGI Comments : New Part in Box. NEW Honeywell C437D 2011 Gas A/G/LP Pressure Limit Switch SPST 1/2 TO 5 PSGISKU: 284819837046Call for Pricing (580) 762-1696