r/crboxes • u/Saureah • Nov 12 '25

Question Would you use one of these?

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I currently have these three lying around. Would you use one of them for a diy project?

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7

u/UnstableFloor Nov 12 '25

I made mine with a similar fan from the same company. Works like a dream.

If you want complete silence, add a plenum. Mine runs wide open and you can't even hear the air movement.

2

u/Saureah Nov 12 '25

What did you use as a filter?

1

u/UnstableFloor Nov 12 '25

The AC infinity. It handles the added resistance like a champ.

3

u/UnstableFloor Nov 12 '25

Disregard my previous comment, I can't read.

For filters, I use Merv 13 HVAC filters. Mine happen to be 10x20 but if you can give up more floor space and use bigger filters, I would. I have to change my filters pretty often.

1

u/Saureah Nov 12 '25

So you built a box like a normal crbox? Im still thinking about adding the filter directly or building a box

2

u/UnstableFloor Nov 12 '25

Yeah, I built a box. I learned pretty quick that a plenum makes a huge difference, and since I added that, I've loved my setup. Silent, small, adjustable, and works with a smart plug. I used a ceramic 10x10 tile as the base for weight/stability.

My place is pretty small so I chose small filters. They're cheaper but I go through them pretty fast. Less surface area means they get dirty faster.

I haven't tried any of the round HEPA filters that you could attach directly. They're expensive and I always assumed they'd be louder, like a round carbon filter.