Yess they do., no adapting needed.

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See our pond at: home.bellsouth.net\p\pwp-jameshurley
Check out Jog-A-Thon fundraiser (clears $140+ per child) at: jogathon.net
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"BenignVanilla" m wrote in
message ...
"Phyllis and Jim Hurley" wrote in
message ...
We have them, in pairs (Ring and flat lift ring) on all our kiddie pools
and
on the EDPM veggie filters. We have sealed the joints with tar. No
leaks,
5 years.
snippage

Do they make them in a size that will attache to 4 inch PVC? I think I
need
a trip to Home Depot tonight.

BV.