Great video. 3M make great products, but their product packaging and website are pathetic leaving most people confused as to what mask and filter combinations are necessary for work environments and tasks.
I have a long and thin face. I ultimately had to buy a versaflo TR-600. Half mask 7502M pressed my nose bridge red and painful when used more than +10mins. Full mask 6800 leaked always around ear's height. Those silicon masks only work if you have short and round face type.
