Pump covers, sometimes referred to as volutes, occasionally get damaged during operation. Danner's replacement pump covers are compatible with both Supreme & Pondmaster Pond-Mag Pumps. The pump cover helps to hold the impeller in the chamber. This pump cover is designed to use with the Supreme Aqua-Mag and Pondmaster Pond-Mag models 24 and 36 - 2400-GPH and 3600-GPH magnetic drive pumps. Pump covers can also be called volutes and help hold the impeller in place. Compatible with Pondmaster Pond-Mag Pumps and Supreme Aqua-Mag models. Includes the rubber gasket. Genuine Danner replacement part. MODEL NO - ASP12783