ReeferMedic said:AGA sells them all set up and adjustable for $20 a pair. WELL worth not having to screw with making one yourself. I got mine from Marc when Fishey Business was still open.
I'm running them on my 210. I also got them from Marc, but the were $20 each. Well worth the money. I tried the PVC route and couldn't stop the noise. You can buy just the standpipes and not the return kit. The even come with snail guards. The only sound from my 210 now is the hood fans.