50 Pairs=100pcs Replacement 2091 filter for 6200,6800,7502,7000, FF-4 Respirator. These filters fit 6000, 7000 series full face mask respirator we sell. The reason is that the extremely fine filtration traps all but the most minuscule particles. So our customers use them to protect against lead dusts in particular, as well as a host of other dusts, allergens and fumes. The filters are extremely light weight, flexible and they fit tight against the mask, all of which makes wearing this type of mask a bit more comfortable. Notice: Due to the light and screen difference, the item’s color may be slightly different from the pictures. An unpaid case will be filled after 4 days. We will not be responsible for item loss due to wrong or unknown address. We promise to offer the lowest price and high quality produce. Welcome to our store! Your satisfaction is our top goal, we appreciate your business. To 6:00 p. Thanks for your patronizing!