18-ft Round Above-Ground Pool Liner, Unibead Vinyl Liner, 52 in Wall, Standard Gauge for Steel-Sided Pools

This 18-ft round above-ground pool liner is sized for the homeowner whofts replacing a leaking or worn liner on a steel-sided pool without hiring a service¡ªa common mid-season repair that goes smoothly only when the liner size matches exactly. Built to fit 18 ft round flat-bottom pools with wall heights up to 52 in / 132 cm, the liner avoids the stretched corners of an under-sized product and the wrinkled floor of an over-sized one. The smooth vinyl surface is puncture-resistant and leak-proof, engineered to stand up to chlorine, UV exposure, and common pool cleaners without cracking, fading, or chalking after one summer like economy liners do. Unibead design supports both J-hook and standard-bead installation methods, fitting steel-sided above-ground pools across multiple brands¡ªa pro tip: air-dry the liner at room temperature for several hours before installing to restore softness and prevent cold-stretch tears. Inside the pool, the vinyl floor adds a soft cushioning layer that eases knee, foot, and elbow scrapes compared with bare steel panels or concrete. Off-season, the waterproof vinyl doubles as a boat cover, outdoor-furniture shield, or patio sunshade. Unfolded dimensions phi 18 x 3.9 ft / phi 549 x 120 cm; net weight 39.9 lbs / 18.1 kg; compatible pool height 52 in; compatible pool shape round; compatible pool size phi 18 ft; main material vinyl. Model 18X52X0.32. Installation accessories sold separately.