Quote:
Originally Posted by LonestarROB
Yup, that's mine with the big ol filter box. Picked up a 3" flexible coupling yesterday but wasn't able to find the PVC pipe. Will try to get to some other stores this morning.
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There's GOT to be PVC pipe in Home Depot or Lowes.

You need 3", Sch 40 stuff. This is "standard" cold water supply pipe for homes. Failing that though, you COULD use the grey Sch 80 PVC electrical conduit pipe. It has one end that is "flared", which of course doesn't matter since you won't use that end.
I'd be a bit leery of the flexible stuff. Some people have reported that it "puckers" in under the effect of air passing through which would actually restrict airflow.
- Jack