Product Description
12' Swimline Boulder Swirl
Unibead 52" Tall Liner
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Upgrade your pool with a premium look using the 21' Swimline Boulder Swirl Unibead Pool Liner, designed for 52" tall above ground pools. Featuring a highly detailed boulder rock border with swirling water pattern, this liner creates the appearance of a more natural, in-ground style pool while adding depth and visual appeal.
Constructed from durable, high-quality vinyl, this liner is built to withstand UV exposure, pool chemicals, and everyday use—helping maintain both its strength and vibrant design over time. The unibead design offers versatile installation options, allowing it to be used as either a beaded or J-hook (overlap-style) liner for added convenience and flexibility.
Perfect for homeowners looking to elevate their pool’s appearance, the Boulder Swirl liner combines durability, style, and easy installation into one high-performance upgrade.
Key Features
• Fits 21' round above ground pools
• Designed for 52" wall height pools
• Boulder Swirl pattern with realistic rock border design
• Durable vinyl construction for long-lasting performance
• Unibead design (beaded or J-hook installation options)
• Resistant to UV rays, chemicals, and fading
• Ideal for pool liner replacement or premium upgrade
A unibead pool liner is a versatile, "two-in-one" above-ground liner designed with a dual-purpose top edge, allowing it to be installed either as a J-hook (hooked directly over the wall) or as a standard beaded liner (using a bead receiver). They are highly favored for upgrading from overlap liners to include decorative top tile borders.
Swimline's pool liners are warranted to be free of defects at their seams for a period of twenty five seasons, (from the date of purchase on a prorated basis, each season ending December 31st of the calendar year. Replacement under the warranty is as as seen in chart. Swimline's 25 Year Limited Warranty covers defects in workmanship causing any liner to separate at its seam during its warranty period. Contact Swimline directly for warranty claims.
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