12'x18'x52" Oval Uni-Bead Sapphire Liner - 40 Gauge Winter Closing Package and scale can occur

and scale can occur

It is recommended to shock the pool on a regular weekly or bi-weekly basis (shocking helps to eliminate build-ups of un-filterables such as body oils & lotions plus it also kills early outbreaks of algae)

vinyl-coated

The sides of the appliance are protected with a breathable tight woven mesh material keeping out the debris while keeping the unit moisture free

12'x18'x52" Oval Uni-Bead Sapphire Liner - 40 Gauge Winter Closing Package and scale can occurSwimline's unibead liners are made to last. These liners are made of extra heavy duty virgin vinyl, with super strong welded seams to last long winters and hot summers. Swimline uses computerized cutting tables and a computer aided design to make their liners, eliminating the risk of human error. Whether it's design, pattern or fit, these quality liners are unbeatable.