Pre-Filter PHAT

This refill replaces your used pre-filter to extend the life of the Phat filter by filtering out the largest impurities before they have a chance to enter the actual filter. Each pre-filter is stamped with the Phatfilter logo and fits perfectly over your Phat filter. The pre-filter can be easily slipped over the filter and secured with the provided plastic straps. If your prefilter is dirty or discolored, it’s time to change it. Contents: 1 pre-filter and 2 plastic straps.