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Old 01-04-2008   #9
Halon
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Join Date: Nov 2003
Location: Blaine
Drives: Teh Bean
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Re: Custom Undertrays

I personally used some sheet aluminum on the one I built. Mine isn't a complete undertray though, it's just mainly used to trap air so that it has to go through the radiator. I don't remember the thickness, but it was pretty thin. I got it from Lowe's. Discount Steel would have been a better bet, but Lowe's was 2 minutes from my house.
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