Power Steel Rectangular Pool Set 136in x 67in x 48in / 4.12m x 2.01m x 1.22m/ water capacity (90%)8,124L(2,146gal.) The extra strong side walls of this pool are constructed with Tritech�, a 3 layer reinforced material with a polyester mesh core encased between two layers of high gauge PVC material. This creates a total thickness of 0.40-0.80mm (16-32 gauge) depending on the size of the pool, offering superior strength and durability.