The 3N11 filter cotton cannot be washed with water. When the filter cotton becomes dirty or the breathing resistance increases significantly, it should be replaced in time.

Filter cotton specifications (diameter): 7.7 cm and 8.8 cm

1 cm = 10 mm = 0.39 inch

package:

As per you choose(As shown)

Note:

1.Due to manual measurement, please allow an error within 1-2 mm, Please make sure you don't mind when you pay

2.Gas mask not included.

Description:

3N11 filter cotton is suitable for 308 and 8200 dust masks, and also suitable for 3200, 308 and 8200 gas masks. As shown below: