What's in the box:

20pcs 3701CN Filter Cotton Compatible with 3M 3200 Gas Mask Dust Filter PM2.5 Anti Industrial Construction Dust Pollen Haze (Standard)

Features:
Can be used with 3200 series Gas Mask.
Made of microfiber, effectively keeping you away from dust and particulates.
Effective, giving you a better working environment.
Helps provide respiratory protection.
Effectively filter fine dust and other non-oil particles with a minimum filtration rate of 95%.

Specifications:
Model Number: 3701CN
Defense Objects: Non-oily particles
Material: Fiber
Color: White
Width: 14.5cm
Package Size: 23 * 16 * 7cm / 9.1 * 6.3 * 2.8in
Package Weight: 69g / 2.4oz

Package List:
20 * Filter Cotton