Need "extra long pattern closet flange"

I am in need of a PVC "extra long pattern closet flange." I have an Oatey that is 3" (top to bottom), but I need one that is 4" (top to bottom). I see that Law Supply has both a 4" and a 6" http://www.lawsupply.net/brass_ware/toilet_parts/index.htm (Item CF-15P-340). Law Supply is not close , I might be able to find it locally if I had a manufacturer and part number. Can anyone help with that?

I found this one online --
I called the local plumbing supply houses -- didn't get intelligent life forms. All they had was the "usual" closet flanges, the only extended ones they have are for cast iron (I can get those from Lowes or Home Depot!). So, looks like I will have to order it.

Well...........I've been plumbing since the 70's and have never used one of those.
They tend to sell to plumbers that do things right the first time. That looks like a "fix-it" part.

I could use a 3" coupling and a 3" off the shelf closet flange, but the above (shortened to 4") eliminates one fitting.

A plumbing supply house, like many other agencies, does NOT stock items that they might sell once in every 5 or 10 years.