GLI Armor Shield Liner Protection System, Round, 30' Unit of Measure:EACH each cartridge lasts 3 to

each cartridge lasts 3 to 4 weeks depending on the size of your tub and how often it is used

Start spa with Brom Bank

Includes 2 filter bags: 1 Reusable Xtreme Multilayer Filter Bag that removes leaves

Tiny doses to sanitize and disinfect

bag of salt 4

GLI Armor Shield Liner Protection System, Round, 30' Unit of Measure:EACH each cartridge lasts 3 toArmor Shield provides an important protective layer between a vinyl swimming pool liner and its sand or soil base. Unlike traditional foam padding, Armor Shield is a Polypropylene Geotextile blend that minimizes cuts and punctures to the vinyl liner caused by rocks, roots, grass and even GLASS! Armor Shield also reduces convective heat loss and provides a comfortable floor pad for the comfort of pool goers. KEY FEATURES: Placement of Armor Shield