Note: Instructions are included. Please read it carefully before installation. In order to prevent the water from going out during installation, and it cannot be used to flush the toilet. Note: The 12-inch and 14-inch dimensions here refer to the size of the sand filter to be adjusted, not the size of the fixture itself. Therefore, if you need a clamp 12 to 14 inches wide, then this is the wrong item. However, if you need a fixture for a 12-inch or 14-inch sand filter, then this is the right project. High quality and great substitute. 11380 Pool Clamp Replacement Part with Screws, Fit For 12 and 14 Inch （Pump Flow Rate: 2,100 and 2,800 gph） Intex Sand Filter Pump