Need help with Ducting..

[iGrow420710]

I dont know which ducting to use..

Acoustic
Phonic Trap
Sono
Combi..

I will be using a hyperfan stealth and need everything to be absolutely quiet....

[Potted]

Insulated flexible keeps the noise down. My two cents

[cyberaktif]

you can also get a "muffler" for your ductwork as well.