First Choice Cal Shock 65%, 100 lb Drum Item #23841 | Model #PVC 07200 0800 it's tough and durable

it's tough and durable

20V MAX battery

000 BTU Low NOx gas burner delivers 81 gallons in the first hour

Industrial/Commercial Cooler Cover

First Choice Cal Shock 65%, 100 lb Drum Item #23841 | Model #PVC 07200 0800 it's tough and durableContains 65% available chlorine Convenient, easy to use & fast dissolving Economical Effective Sanitizer The available chlorine (65%) is released when the product is dissolved in water and it works continually to prevent growth of algae & bacteria. Shock treatment Used for shocking or superchlorinating pool water to destroy organic contaminants and clear up hazy water. Disinfection of potable water granules are NSF 60 certified for potable water use.