$21 Gas mask helmet 3d safety resperator protection classic Low-poly 3D model by hogok. Available on CGTrader with 9420 polys and 4786 vertices. Check it out on CGHub.
MA (Autodesk Maya, filesize: 211 KB), OBJ (OBJ, filesize: 244 KB), FBX (Autodesk FBX, filesize: 768 KB)