I’m replacing my pool liner in a above ground pool. When measuring to buy a new liner would I measure inside the liner from side to side because it’s a oval pool or post to post on the outside of the pool?

Inside is how mine is measured. When you order a solar cover it goes by inside measurements also. Good luck.

Probably better to have the brand and model numbers. Do you have the original advertisement or box(s) that have the size? If in doubt take every measurement, then call or visit Apollo on Monday with measurements in hand.

If you have the model and specifications. They can find the proper liner