12 PCS PM2.5 Activated Carbon Face Mask Filter for Adults, Replaceable Mouth Respirator Filter to Anti Haze Dustproof Air Pollution Germ
Brand: Sanfiland
Features:

Every 2 pieces in a small bag for easy use.

Five Layer Filtration technology keep away from a range of airborne contaminants

All the filters have been professionally tested

Measurement of Adult's Mask Filter:

size: 4.7inch * 3.1 inch

Specifications:

Type: Mask filter for adult.

Material: Activated Carbon,

non-woven melt-blown fabrics.

Size: As picture shows. See the size chart on the fourth picture.

Color: White.

Gross Weight: 0.05 oz.

Packing size: 6.7 inch * 7.1inch * 0.4inch.

Maintenance instruction:

Disposable supplies can not be washed or reused.

1 piece of filter is generally used for 3-7 days.
Every 2 pieces in a small bag for easy use. All the filters have been professionally tested and are qualified products .
5 Layer Filtration technology: filters are Made of activated carbon and non-woven melt-blown filter cloth, five-layer filter system effectively keep away from a range of airborne contaminants, Dust, Haze, Allergies,Smoke,Pollution,Ash, Pollen,hazardous chemicals, heavy metal particles etc.
Size of Adults Mask Filter: 4.7''x3.1''. Suit for adults mouth mask insided with fliter slot.
How to use:Insert the PM2.5 filter along the inside of the mask and use it, Refer to Fifth picture.
Disposable supplies can't be reused or washed. Recommend replace filter once a week for the best effect or 3 day If there is serious contamination.