We designed SM22 in order to offer the max protection for the magnet. In this way it is isolated from agressive external agents (moisture, salt, water, acids...) and it's covered by a chrome case. This product is suitable in different conditions of use such as: industrial kitchens, office furniture, marine applications, shipbuilding, food products...
The strength of attraction is purely indicative and it could be different depending on the type of application and assembly.