Rack mount Airconditioner (yes it exist)

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Hey, I work for a company that does mostly cable pulling (copper and fiber) and we had an 19" rack mount AC go out in one of the factories that we installed a system in. We installed the AC about 7 years ago. It was a Rittal. Rittal has now discontiued the AC. I have found a sim. model from Kooltronics. I was wondering if anyone else knows of another model made by a dif company (Kooltronics wants 1450 for a 1500 btu unit. Any help would be greatly appricited!