ONE FILTER IS MISSING THE LOCK - 2 Pack DXVC6910 Cartridge Filter Replacement for DEWALT 6-16 Gallon Wet/Dry Vac, for DeWalt Vacuum Cleaner DXV06P DXV09P DXV09PA DXV10P DXV10PL DXV10S DXV12P DXV14P DXV16P, White. Thanks for shopping our store!