Air Pressure Switch Std. Alt. 0-4999 ft., For Use With Grainger Item Number 2RYV3, 2RYV4, 2RYW1, 2RYW2, 4LX49, 4LX50, 4LX57, 4LX58, 4LX59, 4LX60, 4LX61, 4LX62, For Use With Mfr. Model Number GG105, GG120, RF090, TF175, TF200, TF250, Fits Brand Dayton, Sterling