testing using HEXFET for exhaust fan

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I'm new to HEXFET. please teach me some if you know.
I'm using IRF1404 for the exhaust fan of my amp, the cooling fan is kind of noisy so i design a very easy diagram for HEXFET to speed control the fan. Can HEXFET connect together for more and same HEXFET(I want for other thing). correct me or teach me...
 

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