3M | Acid Gas Activated Carbon Spray Protection Filter Box

It takes some getting used to.

I couldn't wait to assemble these as soon as they arrived. They fit the 3200 mask perfectly, and the crisp 'click' when rotating the buckle into place gives a real sense of security. I tested them while spray painting; previously, I could smell the pungent thinner even with a normal mask, but with the 3301CN, the odors are completely gone. The filtration is immediate and effective. The 3303 also does a great job with acid gases, as that irritating smell from welding and cutting has practically vanished. The breathing resistance is lower than expected, making it comfortable to wear for two or three hours without feeling suffocated or leaving heavy marks on my face. The skin-friendly material is very reliable. You can tell there is plenty of activated carbon inside by the solid weight. Taking care of your health is a priority, and this is a professional investment that is absolutely worth it. Five stars!