Need cooling for your Micro Grow Operation? GrowMaster has the answer with our 12 ton unit. Dual circuit, Scroll compressors, Single point electrical connection, Large service doors with rubber seals, Flanged metal air connections for easy setup of ducting. The GrowMaster 12 ton unit is a fully contained dual circuited packaged unit ready to put into service the moment it arrives. All you need to do is hook up your electric and you’re up and running. Built to handle high heat loads, the GrowMaster 12 ton is a perfect fit for anyone running their own Micro Grow Room.