Motor,1/2 HP,460V,5/8 In. Double Shaft, For Use With Grainger Item Number 20KD48, 20KD52, 20KD56, 20KD61, 20KD65, 20KD69, 45C661, For Use With Mfr. Model Number STD236-1UH-OB, STD242-1UH-OB, STD248-1UH-OB, STD260-1UH-OB, STD264-2UH-OB, STD272-2UH-OB, STD296-2UH-OB, Fits Brand Mars Air Doors