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Posted by tony on September 17, 2007, 4:15 pm
Check in bathroom supplies I will sale you one $50.00
6" OD or 8" presently not sure
> -zero (sometimes.zero_removethis@gmail.com) wrote:
>
>> This is nice and quiet, and IMO, better quality then the others
>>you'd mentioned.
>
>>http://us.exhausto.com/files/pdf/Brochures/3921002.pdf
>
> Their fans seem mostly too big, I need something about 300 CFM. But I
> could check out the smallest pizza oven fan. I need something inline
> though, that's meant to be inline in the ductwork, I'm not sure if their
> fans are inline fans.
>
> What I'm looking for is an inline fan that's engineered to be quiet. You
> can have fans pulling a lot of CFM that are quiet. The motor has low RPM,
> so that cuts down on motor noise.
>
> Broan says their inline blower has a "low RPM" and is quiet. But they
> didn't know what the max RPM is, though the technical support person said
> she'd
> try to find out.
>
> The whole arrangement, having a range hood fan inline in the ductwork in
> the attic, is something you can buy as a high-quality range hood. Some of
> Broan's range hoods can be used with an external blower. The Broan blower
> ILB3
> is what I was looking at. I know this arrangement isn't contrary to
> code. All the code says about kitchen exhaust so far as I know is that
> it has to be rigid metal ductwork and a backdraft damper. Yes, I would
> put a filter in it. You can buy custom size filters for range hoods
> online.
>
> I eat a very lowfat diet and don't use grease for cooking myself, but I
> do want to allow for the possibility that someone else might use the
> arrangement for cooking with grease. My ceiling over the stove hasn't
> gotten dirty, even without a range hood.
>
> Laura
>
>
>>> - about 300 CFM max
>>> - can be speed controlled about all the way to 0.
>>> - doesn't make a hum or whatever when speed controlled.
>>> - Absolutely as quiet as possible.
>>>
>>> I've heard that if you compare a small fan with a large fan that's
>>> turned
>>> down with a speed control to move the same CFM as the small fan, the
>>> large
>>> fan will be quieter.
>>>
>>> So, I figure I'd get about a 300 CFM fan and turn it down with a speed
>>> control. Somebody at Broan told me their
>>> fan doesn't have a low-voltage hum when speed controlled. I don't know
>>> how big
>>> of a deal the low-voltage hum is, compared to the noise from the fan
>>> motor.
>>>
>>> I know stuff about reducing the noise that's moving through the duct -
>>> duct silencer, liquid soundproofing you can spray inside the duct. Etc.
>>> etc. My question though is about the quietest *fan*.
>
>
>
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