This damper motor (RMOTDA256WRZZ) is for microwaves. Damper motor RMOTDA256WRZZ closes the damper during convection operation to maintain the proper temperature, and opens the damper at the end of the convection cycle. Works with the following models: Sharp R-1850 R-1852 R-1870 R-1872 R-1851A R-1874 R-1851 R-1855A R-1871 R-1875 Top models using the same part : R-1850 R-1852 R-1870 R-1872 R-1851A R-1874 R-1851 R-1855A R-1871 R-1875 If you have questions about the models, contact us and we will help you as soon as possible.