3M Fire Barrier Moldable Putty Pads MPP+, Red Color, One-Part, Ready-To-Use, Intumescent Material, 7 in x 7 in, Case of 20

This is exactly what was needed to pass the inspection in a commercial room. Delivered quickly and in good quality.

The shipping was fast and it was what I needed to pass at building inspection. It is also kind of fun to install.

Great product.

It forms and sticks pretty well. Not sure what others were complaining about. It's just like plasticine. If you push it together, it'll be like one piece. However, I was able to light it on fire with a torch, and it stayed lit. See photo. And MAN it smells bad when it burns!

Very easy to work with. It conforms to any shape needed for covering electrical boxes. Make sure to have some rubbing alcohol handy. Use it to clean the boxes first, or the putty will definitely not stick. All you really need is a pair of scissors. Be prepared to cut a LOT of small pieces for covering all the seams and holes. You'll also have to use that rubbing alcohol to clean your scissors because they'll be absolutely coated in putty.

I used them to sound proof the outlet boxes. Easy to use and good price.

We used this to wrap electrical outlets during our remodel to dampen sound. great stuff!

I'm a residential general contractor and my electrician recommended this product. It was very easy to use and the inspector was impressed.