The SHARK-M from Nascom is a U-Channel magnet, black. The patent-pending SHARK magnet is designed for steel and aluminum U-channel doors. The SHARK magnet is incredibly easy to install - just squeeze it, fit it and forget it.Features?Shark? Teeth Hold the Magnet in PlaceStrong Rare Earth Magnet (Grade N35 NdFeB)Easy to InstallNo CleaningNo SiliconeNo Wood or TapeStainless Steel SpringsABS Housing
