what size does the pressure treated lumber need to be cut, under the u bar's (support system) for the intex ultra frame 12x24x52. Also, how thick does the pressure treated lumber need to be? I called intex customer support a few times and that certainly was a joke. My fist call resulted in the girl telling me to cut the lumber bigger than 12 x 24 x 52. the 2nd call they wanted to sell me the 18 ubars that go to the pool.

Help would greatly be appreciated as I am suppose have arrival of this pool tomorrow afternoon.