Hi! Here is a new in box RZ Mask, M2 model in Large (see bottom for sizing info). It comes with two unused F1 model filters that have the activated carbon layer. 
I use these for woodworking...but made a mistake on an order so I have extras. Let me know if you have any questions - Thanks!

Each quantity purchased =
  • [1] M2 RZ Mesh Mask
  • [2] V1 one-way discharge valves
  • [2] F1 standard active carbon filters
  • Elastic neck strap extender
  • Storage bag
  • Carabiner
  • Valve replacement tool
  • User guide

M2 Mesh Mask Features:

The M2 utilizes a highly breathable, comfortable, and durable mesh fabric construction that helps to keep you cool on even the hottest summer days. It features a single strap hook-and-loop closure, aiding in quick installation and removal of the mask.

  • Breathable mesh construction helps keep you cool and comfortable
  • Adjustable nose clip eliminates any fogging of your glasses
  • Dual one-way discharge valves reduce moisture inside your mask
  • Best-in-class filtration and comfort with 360-degree seal
To determine the correct mask size for your facial structure, we recommend measuring from the bridge of your nose to the tip of your chin.
Medium: 3.5"- 4"
Large: 4"- 4.5" < This auction is for Large! 125-210 lbs body weight is a secondary listed size gauge
Extra Large: 4.5"+