- Open the mask to expose the interior of the filter valve.
- According to the OPEN directions on the valve, turn the valve counter(clockwise), to separate the valve.
- Remove the filter.
- Replace the new filter, reverse the above steps, clockwise rotation of the valve, over.
Quantity: as pictures 1
*Notice*: If you buy our filters and also buy our dust masks, then can get a 45% off discount on filters. Discount Code: FILTER45
Our Dust Mask Link: https://www.skysper.com/collections/mask