Not Marketing Talk – Cutting Through The BS — Perma this, Gauge that, Mil’s misquoted – This is the thickest liner you can buy for an above ground pool. If you do not install it on a sunny 70 degree day, it will not stretch, and it WILL BUCKLE YOUR POOL WALL. Even if you do install it on a sunny 70 degree day, if the nights are cool and you are filling it with cold well water, it will likely buckle your pool wall. Liners this thick should be installed by professionals.
Full Radius Explanation: Lots of pools marketed as a 27×52 are not actually 27′ in diameter! They might measure 26′ 9″ or 27′ 1″. Full radius means your pool is actually 27′.
27×52 Thick Premium Liner
- Pattern: Concord Mystic – Liner Doctor Series
- Manufacturer: Latham (formerly GLI)
- Size: 27×52
- Bead Type: Uni-bead
- Thickness: 20 mil
- Weight: ~121 lbs

Delivery Timeline
Plan on about 10 business days from order to arrival. Your liner ships from our supplier to us in ~5 business days, and we ship it out to you within 5 business days of receiving it. If it’s urgent, give us a call at (978) 710-8667 — sometimes we have liners in stock locally and can expedite.
Warranty & Protection
25-year limited / 5-year full warranty. Liner Doctor Extended Protection Program: $300 allowance for freight, water, and labor costs on any manufacturing defect. This is best-in-class coverage for above-ground pool liners.

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