BEFORE PLACING YOUR ORDER CONTACT US SO WE CAN CONFIRM AVAILABILITY AND OFFER YOU A DISCOUNT CODE. YOU MAY DO THIS VIA CHAT OR EMAIL [email protected] SEND US THE PRODUCT NAME AND WE WILL PROVIDE THE DISCOUNT CODE. WE PREFER CHAT TO GET RESPONSE. Many working environments will produce harmful gases and dust. We can help most people by providing protective equipment. 10Pcs 5N11 filter cottons are provided for you to replace the original one on your face mask, providing you with long-lasting protection. The 5N11 Professional Filter Cotton will help to provide respiratory protection in environments containing certain non-oil based particles, giving you clean, fresh air when you\'re servicing equipment, cutting, welding, coating, manufacturing, shooting, etc.. Compatible with 6000/ 6100/ 6200/ 6800/ 7501/ 7502 Respirator.