This replacement cartridge from Attwood is designed for use with the Tsunami 800 Mk2 series bilge pumps. It is manufactured by Attwood, a leading brand in the marine industry. The part number for this cartridge is 5622-6 and it is made in China. The cartridge measures 6\" x 4\" x 4\" and it is easy to install in the pump. This product is ideal for boat owners who need a reliable replacement cartridge for their Tsunami 800 Mk2 bilge pump.