{"product_id":"oem-goodman-300-f-rollout-limit-switch-for-gmnt120-5b-b1370145","title":"OEM Goodman 300°F Rollout Limit Switch for GMNT120-5B — B1370145","description":"\u003ch2\u003eGoodman B1370145 300°F Rollout Limit Switch\u003c\/h2\u003e\u003cp\u003eThe Goodman \u003cstrong\u003eB1370145\u003c\/strong\u003e is a genuine OEM flame-rollout limit switch rated to open at \u003cstrong\u003e300°F\u003c\/strong\u003e, engineered as a direct-fit replacement for the \u003cstrong\u003eGMNT120-5B\u003c\/strong\u003e gas furnace. The rollout switch is a critical safety control mounted on the burner assembly. If flames roll out of the burner box — typically due to a blocked heat exchanger, cracked cell, or poor venting — this switch trips and cuts power to the gas valve, preventing fire and overheating damage.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTrip temperature: 300°F (open on rise)\u003c\/li\u003e\n\u003cli\u003eType: flame rollout safety limit switch\u003c\/li\u003e\n\u003cli\u003eReset: manual reset\u003c\/li\u003e\n\u003cli\u003eTerminals: standard 1\/4 in. spade connections\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GMNT120-5B furnace\u003c\/li\u003e\n\u003cli\u003eOEM part number: B1370145\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThis \u003cstrong\u003egenuine OEM Goodman\u003c\/strong\u003e switch is calibrated to the exact 300°F trip point specified for your furnace. Generic rollout switches with incorrect trip ratings can either nuisance-trip during normal operation or fail to protect the unit. For a safety-critical control, always match the factory temperature rating and reset style.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2\/5).\u003c\/strong\u003e Remove power, unplug the two spade terminals, unscrew the switch from the burner bracket, and install the replacement. A repeatedly tripping rollout switch signals a combustion problem — inspect the heat exchanger and venting before assuming the switch itself has failed.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eFits Goodman GMNT120-5B. Always cut power at the breaker before servicing.\u003c\/em\u003e\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058131878259,"sku":"GOODMAN-11756","price":4.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-300-f-rollout-limit-switch-for-gmnt120-5b-b1370145","provider":"National HVAC Parts","version":"1.0","type":"link"}