A sediment filter`s main purpose is to remove particulates from water. It is rated by a micron number which refers to the size of the particles that the filter will trap. These are often required as a pre-treatment for other types of treatment such as reverse osmosis and carbon filtration. Keep in mind that sediment filters only reduce particulates. They do not remove chemicals or make the water taste or smell better.
This filter is a non standard size 9″ x 2.5″ if you are unsure of the size that you have measure the height of your existing cartridge, if the size is 8 3/4″ or 227mm you have a 9″ system.