More info is needed for an exact answer.
Is the 'underneath' area capable of temp changes, or can it be in direct sunlight?
What is the length?
Do you have a EJ where the PVC comes up out of the ground?? (if applicable)
A good source of PVC info is the Carlon catalog, or the Carlon website. They are the 'brand' PVC available around here (NJ)
John
