Does anyone use the metal duct elbow?

[The123321]

I am looking at the 32x32 tent with the ac infinity 6" fan with carbon filter at the top of the back of the tent with filter > fan > elbow to exhaust hole at top of tent that is under a wire shelf with the meanwell driver for the led quantum board which means I do not need duct once it gets out of that hole. I only need like 1 foot of duct from the filter to the hole and I am looking at either using a short piece of flexible duct or a metal duct elbow. The duct elbow is much lower price. I looked for insulated duct but it is expensive on there.

If I use flexible duct the shortest pieces I found were like 8 feet. I would likely need to cut that right? The fan would be right under the hole so I really only need something to take air from the side of the fan to then point it up to the hole which is why I am looking at the duct elbow on there.

Would a duct elbow work instead of duct on there? It looks like would be all I would need to point the air from the fan up out of the hole at the top of the tent on there. Do you think the duct elbow would be much louder than duct on there?

 

[TurboBucket]

It'll work just fine. Hard duct has less resistance than flex anyways.

 

[The123321]

Thanks. Do you think the elbow would have more noise than if I use a cut down piece of flexible duct for that like 1 foot length of the elbow on there?

 

[TurboBucket]

A short run like that will be comparatively noisy no matter what. Insulated hard pipe would flow the best and be the quietest. If you bump to the next duct size larger it will help with the noise. Same volume of air at a lower velocity so less noise.

 

[The123321]

Thanks. I think the hole at the top is 8" then I could use like a 6 to 8 inch metal elbow or a 6 to 8 inch adapter to the 8 inch elbow that points it to the top hole on there?

 

[TurboBucket]

Correct

 

[The123321]

Thanks. I may look into that for it.

 

[iNeedMeds]

Build a muffler out of 3' of duct, and line it with a cheap foam mattress topper. The kind with the bumps. They work really well.

 

[The123321]

Thanks. The tent is only 32x32. I do not have much room in there. I looked in it and it looks like I may not be able to do filter > fan > exhaust due to not having enough room to do it in 1 straight line to the exhaust. I may have to do filter > duct > fan > exhaust with the filter pointed one way then an right angle to the fan then a right angle elbow up into the exhaust hole. Do you think that will work on there?