Siless Liner 157 (4 mm) mil 9 sqft Car Sound Deadening Closed Cell Foam & Heat Insulation mat - PE Foam Sound Deadener Material & Heat Barrier

Idk car guy used it to install in my rear car studio setup

Worked out perfectly I didn’t need a box of sound insulation material for a small area in my truck and this sound liner was just the right square footage to complete my projec Great product

Easy to work with. The adhesive is sticky, duh. But what I mean is it's difficult to cut with scissors and sticks to fingers. It comes off by rubbing them on a cloth. Seems to stay adhered to walls and metals. I found it pretty satisfactory.

I used this on the roof of my Chinese excavator. That thing was humming along quite well at many frequencies and needed to be attenuated. I bought this product for this purpose but quickly found out that it was not dense enough. While it did attenuate the noise by about 50%, the material is just not dense enough to get more out of it. I will say though that the glue they used is fantastic. If/when I remove it to install something different, it’ll be a chore to take it off.

I bought this to add some sound dampening to my homeserver, and it does a fair job at it. I have applied it on the inside of the PC case, to the bottom, the top, and both removable sides. it has substantially changed the noise emissions from the gaggle of enterprise HDDs housing my data. From this day forward, every desktop PC or homeserver I build will use this stuff.

Lined my wdriverside door in it. No difference in sound, maybe some thermal difference. Look elsewhere in my opinion.