Smartline Boulder Swirl Pool Liner - 21 ft round, 25 gauge
Round 21 ft pool liner with Boulder Swirl pattern. Durable 25 gauge vinyl for steel sided above ground pools; gasket kit included. Customer note: easy installation and good value
Highlights
- 25 gauge durability
- includes gasket kit
- distinctive Boulder Swirl pattern
Pros
- durable 25 gauge vinyl
- includes gasket kit
- boulder swirl pattern
- easy installation guidance
- strong fit with proper measurements
Cons
- requires correct size measurement
- outside-wall height determination needed
- instructions suggest sun-warming vinyl before install
Best For
Features
- Round pool liner for 21 ft diameter with 48–52 in wall height, overlap style
- Boulder Swirl pattern with blue rock accents and water backdrop; North American cut material hand-folded to minimize creasing
- Overlap installation: liner drapes over wall, bottom seam aligned near cove, secured with coping strips; no bead receivers needed
- Includes universal gasket set compatible with standard or wide-mouth skimmers and returns to help prevent leaks
- Pre-installation guidance: warm vinyl in sun 1 hour and install at 70–80°F for stretch; suitable for flat-bottom pools, note not for Pop-Up pools
