Mechanical Thermostat, 21+/- capillary tube, 8" bulb .No longer includes knob and label. 1/4 Terminals ,60 -220F ,SPST. UL Recognized File No. E168164(S), XAPX2C-UL Recognized File No. E168164(S), XAPX8E.C. Declaration of Conformity RoHS Compliant .Used on various top and bottom mount units Commonly used on various Crescor models such as 120-1828, 120, 120-240, 120PH1836D, 120PH1836D208, 120PH1836D240, 121PH, 121PH-240, 121PH1818D, 121PH1818D208, 121PH1818D240, 121PHUA11D, 121PHUA11D208, 121PHUA11D240, 126PH, 126PH-240, 1301836D, 1301836D208, 1301836D240, 1301836RR, 131UA11D, 131UA11D208, 131UA11D240, 131UA9D, 131UA9D208, 131UA9D240, CCB-120A, CCB-150, CCB-96A, EB-150, EB-150-208, EB-150-240, H-339-12-135C, H-339-12-135CE, H-339-12-188C, H-339-12-188C-240, H-339-127C, H-339-127C-240, H-339-128C, H-339-128C-240, H-339-1813C, H-339-1813C-240, H-339-1813C-GML, H-339-1813C-GMR, H-339-188C, H-339-188C-240, H-339-UA-8C, H-339-UA-8C-240, H-339-X-128C, H-339214, H135SUA11, H135SUA11240, H135UA11, H135UA11240, H135UA11J1, H137PSUA12C, H137PSUA12C208, H137PSUA12C240, H137PSUA6C, H137PSUA6C208, H137PSUA6C240, H137PSUA9C, H137PSUA9C208, H137PSUA9C240, H137PUA12C, H137PUA12C208, H137PUA12C240, H137PUA6C, H137PUA6C208, H137PUA6C240, H137PUA9C, H137PUA9C208, H137PUA9C240, H137S96BC, H137S96BCDJ1, H137S96BCDJ2, H137S96BCJ1, H137S96BCJ2, H137SRRC2020C, H137SRRC2020C208, H137SRRC2020C240, H137SUA12CDJ1, H137SUA12CDJ2, H137SUA5CDJ1, H137SUA5CDJ2, H137SUA6CDJ1, H137SUA6CDJ2, H137SUA9CDJ1, H137SUA9CDJ2, H137UA12C, H137UA12CDJ1, H137UA12CDJ2, H137UA9CDJ1, H137UA9CDJ2, H1381834CDJ1, H1381834CDJ2, H138N1834CDJ1, H138NPS1813CLA, H138NPS1832CLA, H138P1834C, H138P1834C208, H138P1834C240, H138PS1834C, H138PS1834C208, H138PS1834C240, H138S1816CDJ1, H138S1816CDJ2, H138S1834CDJ1, H138S1834CDJ2, H149PC, H149PC-240, H149UA12, H149UA12-240, H161FUA11CM, H161FUA11CM208, H161FUA11CM240, H161FUA11CMCAN, HJ-531-10-240, HJ-531-10-240-240, HJ-531-13-180, HJ-531-13-180-240 and where part is applicable.