Boulder Swirl 21 ft Round Overlap Liner 48 or 52 inch

Overlap swimming pool liners hang over the pool's wall and are secured to the top of the wall using plastic coping (click here to purchase new/replacement coping for your pool). You then place the top rail of the pool over the coping to fasten it into place. Our overlap liners work with constant depth pools and with pools that have 48 or 52-inch wall heights. After connecting the liner, any excess material should be rolled up or cut off for a clean finish.

This liner will work on flat bottom profiles and will also work with dished pools of up to 8 inches. This liner is designed for the size of the pool specified in the product name.

*Please Note: This liner will not fit a pool with an expandable bottom or deep end.

Note: Due to the nature of various monitors, video cards, and settings, colors shown on the site may vary slightly.

Liner Qualities and Highlights

• The most technically advanced radio frequency (R.F.) vinyl welding reduces the chance of cold spots in the seaming process.
• High-pressure heat bonding, a computer-balanced combination of high pressure and exact temperatures, ensures a permanent bond.
• Lap-welded seams, unlike butt-welded seams, reduce both lateral and vertical tension.
• Vacuum sealing: High-volume air pumps combined with electronic air filters remove all impurities before bonding.
• Quality control inspectors inspect every liner during the welding process.
• The high-temperature curing, computer-controlled process ensures 100% of the material is vulcanized to the highest tolerances.

PLEASE NOTE: Liners also come with a "DO NOT DIVE" sticker that MUST be placed 2 inches above the water level. It is imperative that this sticker is visible to all swimmers.

Warranty Coverage: Above ground liners come with an excellent 15-Year Prorated Manufacturer's Warranty. The manufacturer warrants this liner to be free of defects in the seam. Separation of the seam is considered a manufacturing defect. Tears, punctures, pattern loss, and color fading are not manufacturing defects and thus are not covered under warranty. The warranty does not cover any labor charges, cost of lost water or chemicals, or any other damages that may occur.