How to power 2 15.2v 57.2 watts peltier plates
In a comment, you explained that you are:


  Trying to cool a grow tent that's 2x2x4 heat is coming off of a 450w led


A 450W LED will put off roughly 450W of heat. Typical efficiency for a Peltier cooler is 10%, so you'd need something like 4.5 kW worth of Peltier elements (i.e, about 75-80 of the plates you're looking at). You'd also need to supply over 300A of power at 15V to those elements (which would involve a 30+ amp 120V circuit -- this is at least double what you can get from a typical house AC socket), and you'd need to dissipate that 4.5 kW at the hot end (which will require a substantial heat sink / fan configuration, easily another couple hundred watts worth of active cooling).

If it isn't already obvious: this is completely infeasible. Use a traditional air conditioner.