Thermostat, Compatible Grainger Part Number 4LX41, 4LX42, 4LX43, 4LX44, 4LX45, 4LX46, 4LX47, 4LX48, 4LX49, 4LX50, Compatible Manufacturer Model Number RF030, RF045, RF060, RF075, RF090, SF030, SF045, SF060, SF075, TF030, TF045, TF060, TF075