This 52-deep above ground pool uses 2-piece rail caps and wide posts made of steel. Combined, these 2 products create a durable piece of equipment that is built to last and look great. Experience peace of mind knowing that your pool is well supported with these high-quality materials. The latest injection molding techniques are also used on this pool's top rails, which are made of resin to seal the exclusive all-steel wall so you won't have to worry about corrosion or rust. 25 gauge overlap plain blue liner.Overlap: This type is the most common and simply folds over the corrugated metal wall and drapes down on the outside of the wall. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Pools & Spas\Swimming Pools\Above-Ground Pools". The seller is "usapoolsuperstore" and is located in this country: US. This item can be shipped to United States.