Swimline li2154mgu25 Pool Liner 21 Ft Round 54 in 25 Mil

Product Description

The SWIMLINE li2154mgu25 is a 25 mil above ground pool liner designed for 21 foot round pools with a 54 inch wall height. Built to the 2500 Series Perma 25 standard, this liner uses a unibead (uni-bead) bead type that seats into standard bead receiver tracks without requiring additional adapter strips. At 25 mil thickness, the vinyl is rated for heavy-gauge durability suited to residential above ground pool installations. The Mystri Gold Coast pattern provides a decorative finish. Pool service professionals and above ground pool installers are the primary trade installing this liner.

This liner is sized for a 21 foot round above ground pool with a 54 inch wall. The unibead design is compatible with both j-hook and bead receiver track systems, giving installers flexibility on pools where the coping track style may vary. It is intended for residential above ground pool applications. Installation is typically performed during new pool setup or as a replacement when the existing liner has cracked, faded, or lost water retention capability.

Key Features

• 25 mil heavy-gauge vinyl construction for above ground pool durability
• Unibead bead type fits both j-hook coping and standard bead receiver tracks
• 54 inch wall height accommodates full-depth above ground pool walls
• 21 foot round sizing — no trimming required for correct pool diameter
• Mystri Gold Coast pattern with Perma 25 Series finish

Compatibility

Designed as an OEM-style replacement or new-installation liner for 21 foot round above ground pools with 54 inch walls using j-hook coping or bead receiver track systems.

Installation Notes

Pool liner installation should be performed by a qualified pool service technician. Drain and remove the existing liner completely before fitting the new liner, and inspect the pool wall and coping track for damage or corrosion prior to installation. Warm the liner in direct sunlight or with a liner blower to improve elasticity and reduce the risk of tearing during seating. Do not use sharp tools near the vinyl when working around return fittings, skimmer openings, or drain ports.