These small pump cages protect against plugging from leaves, algae and other debris by creating a large surface area around the pump. Designed to fit all brands of small pumps. Each Pump Protector has a polyester filter media pad inside of a nylon mesh bag. A drawstring top with push button release keep the top closed around the pump yet makes for easy pump removal. Has an 8" diameter and 1" thick sidewalls allowing pumps up to 6" diameter.