Noise Grabber Mass Loaded Vinyl - 2 LB, 1' x 1', 1 Square Foot Sheet of MLV - Dozens of Options, Soundproof Barrier, Reduces Noise, Installs Anywhere, Made in the USA

I bought this to put on the back of access doors for plumbing, since the PVC pipe can be quite loud and I wanted to mitigate all the sound I could for the doors to the cleanouts. I found so many uses for the leftovers. I made a small sound maze to put in the makeup air vent to my laundry room, still plenty of airflow but almost no sound escapes through the vent. I put a layer over my sump pump and now I can't hear it run from 2 floors up.

4X4 covered 1 door. It reduces about half the noise coming in. Really heavy. Mounted with screws.

Top notch quality! I will buy more from this supplier when I need it. Used it to sound deaden my doors and seal the holes.

I purchased 2 of these and hung over 2 windows. They do help reduce exterior noise. They will not eliminate all noise, so go in without that expectation. They muffle the sound so you will have a quieter room. They are heavy. You’ll likely need some help hanging them up.

I like how this mlv muffles screams from within the treated room. High decibel chain noises are muffled extremely well, but the lower frequency wailing is not as well dampened by the vinyl. ;)

It comes in a big sturdy rectangular (length of a twin sized mattress) box fresh from a construction warehouse and it's heavy. Excellent.

Stop noisy neighbors hasn't stuck to wall to work

We did a really diligent job wrapping it around a very noisy bathtub water valve & the connected pipes. If it muffled the noise at all it wasn’t enough to notice a difference. I was super disappointed.

Exactly as expected.