Low noise grill for air..

My idea is to build a plenum/soffit on the ceiling of the room (two, actually.. register/return) that quiets down any duct noise, and slows the air down significantly by making a large duct at the end. The last item is a low-noise grill.. was thinking of something like this http://www.usaire.com/products.aspx?mod ... family=CDR Anyone have any better ideas? What do others use? (I tried searching, but apparently couldn't find the right search words.. came up with very little)

I am not all that impressed with the NC ratings - try checking out the Nailor Industries - they have some of the best NCratings on the market......

Thanks, Rod! Any particular ones?

Big, pick whatever suits your situation the best - what you plugged to was linear diffusors - so if that's what you need - compare those to the Nailor linears........ Rod

Well - I'm not married to linear diffusers particularly.. those just seemed like they might fit the bill for low-turbulence. All things being equal - what do you normally recommend for a grill and/or diffuser?

I'm quite interested to know too... Which type of grill is best for low noise?

I haven't purchased them yet, but focusing on the FLV series from Nailor http://www.nailor.com/onlineCatalog/CAD-08/CADAFL.pdf The noise specs on those seem pretty good - velocity should be pretty low, so I'm thinking it SHOULD be ok.

Thanks biggator - they look good too!