DetailsHarmsco HB-10-50W Big Blue 50 Micron Sediment Water Filter. 9 3/4" Long by 4 1/2" diameter - 50 Micron Big Blue - 8 per case, sold individually. Made with a proprietary blend of Polyester-PlusTM filter media. Cleanable and reusable in most applications; individually shrink wrapped. Flow rates Up to 15 GPM (56 LPM). Order a case and save even more.