Can I put the filter under

I'm working a 5cu frig, their is a cavity under neath where the compressor was.
Been thinking was wonder if placing the exhaust at the bottom width wise with an opening at the bottom. and a passive to 65cfm to 85 cfm at the top blowing over the lights. Sucking down to the exhaust??

I can place a aluminum vented covering around that filter to hide and protect it.
 
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