Contact each supplier and ask for a mechanical general arrangement drawing for each one.
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"Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
Dear Rajk....Do you really want us to hazard a guess of how much real estate (foot print) either one will have? Ask an estimator not an engineer. Note; each will have different appurtenances. PwSlacks logic is sound, give it a try. What ever you choose, it will all fit in a room of a certain height.
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