3M Peltor Earmuff Assembly M-985/37333(AAD), for Versaflo M-100 and M-300 Products_x000D_

The Versaflo respirator system is great, but the headgear interferes with other earmuff-style hearing protection. So, either you use ear plugs or you buy these. I tried the earplugs for a while, but finally sprung for these. They are more effective in reducing noise than the earplugs I was using, and are more comfortable. They are easy to pull and swing up out of the way, so they rest on the helmet, when you don't need the hearing protection and want to be able to hold a conversation.(The only thing I can imagine that would be better is if you could get these in a model that includes microphones and electronics that would allow you to hear conversations at the same time as they block out dangerously high noise levels, such as are sold for hunting and target shooting.)

I like these a lot. They are comfortable and work well. Only drawback is they are not designed to be mounted and unmounted repeatedly. Not a big deal, but when I'm not using them I still have to clean them. Very easy to raise and lower as needed. Also, the method of mounting could have been better. Not sure a single screw in plastic was the best design. I'll update if I run into issues with it.

Absolutely outstanding quality. Fit PERFECTLY on the 3M Versaflo M100/M300 helmets (I have the M307), and seal PERFECTLY around my ears! I have had three other powered respirator systems, but this is the first one with earmuffs that fit and work 100% as they should.Installation is easy and instructions are provided on the box. The earmuffs are labeled for "right" and "left" (with an X and O, respectively). The M100/M300 helmets have screw attachment holes molded in, so it is just a matter of lining up the holes and installing two included screws on each side.The earmuffs are easy to "click" into the outward (resting) or inward (sealed on ears) position. When in the outward position, the mounts also rotate back and up to put the earmuffs behind and above the helmet. They add about 9oz to the helmet weight.Comfortable and quiet, with a 24db noise reduction rating. You can't go wrong with 3M and Peltor!

When installed on M-300 headgear, the highest position these earmuffs can get to is still a little too low for my ears. Since I have an XXL head size (meaning my ears are going to be farther away from the connection point for the earmuffs) I have to assume these are too low for for most users.I can adjust the earmuff position down till they're almost completely below my ears, but not up high enough.

it is somewhat difficult to adjust but may depend on the individual.

I bought these to use with my PAPR TR-300-HIK. They work really well to cut down on the noise from either my grinding or that of others I like that I have three possible settings, no protection, full protection, and an intermediate setting I use when I want a quick interchange with someone.

Ease of assembly. Works as advertised.

Very nice product but had to return cause they didn't fit my hubby bump cap