JSP PowerCap Infinity Pre Filters | 10pk with 2 Covers | CEU100-006-500This kit (part code CEU100 006 500) comes complete with ten pre filters and two filter covers that fit into the PowerCap Infinity filter housing. The pre filters should be replaced daily before you start work; this additional level of filtration works as a sacrificial protection layer for the main filters that sit beneath, making the standard filters last longer before becoming saturated. The spare filter cover grilles also included are ideal for