BXISoundproofing Closed Cell Foam - 2 Pack Self-Adhesive 16'' X 12'' X 1.8'' Thickened Egg Crate Sound Proof Foam - Acoustic Foam Panels Great for Noise & Thermal Insulation (Gray)

I partially lined and partially made baffles in my HVAC's cold air return to reduce the noise. Made a big difference. The main thing you need to do is clean the walls of the duct as it is likely very dusty. I would have put in more as baffles, but I didnt want to cut open the duct, so I just did as much as I could reach, thankfully the vent has a large opening (20"x24"). Definetly recommend.

It helps muffle noise from the sump pump in spare bedroom. Easy to cut with scissors to fit. We put a couple layers over the pit lid, also boxed in the discharge pipe. Not perfect but definitely better!

Bought these to use in a portable tool case to pad the lid to keep stuff in place, works great, really soft but plenty of support and durable. The adhesive is AGGRESSIVE on these, the only real complaint is getting the plastic peeled off the back to expose the adhesive is a bit of a problem because its hard to get the edge started to peel it back, the adhesive is really strong and you will end up pulling away foam at the corner before you can get the backing plastic to come off, took a few tries but finally managed to get it. Once stuck down on a clean surface you will be tearing the foam before you can get it to come off, it really sticks. Some reviews reported a smell?? I don't smell anything, but then I'm not a sensitive snowflake to odors, if anything it smells like any new packing foam or piece of plastic electronics that you opened for the first time, after about ten minutes in free air i really couldn't smell anything from them. If they added a tab to the backing plastic to make it easier to peel off, i ended up using a piece of tape to stick to the plastic to then lift it from the adhesive, it would be easier to install. Cutting it to shape was simple with a knife and scissors. Overall very happy with it. Will see how it holds up with time but compared to the cost of other specialty foam inserts this was a cheap way to pad out a tool case.

These soundproof foam is excellent ! It is extremely easy to install, and it really prevents from the sound. The only issue is that in some of them the glue is not very good.

Had a damaged small window in bathroom. Also this window faced a commercial factory. Covered window with double layer of this. Stopped all drafts and somewhat soundproofed. Covered with blinds and curtains so completely hidden

Had to trim just a bit, but perfect fit for side panels of window air conditioner. A lot cheaper and thicker than the foam panels in those kits. Just Duct tape in place. Didn’t use the self adhesive, left the backing on.

ok

I know this is being sold for sound dampening but it worked just fine for the inside top of my camera case. The reason for knocking a star is that if you grip it tightly (like when you're cutting it) it seems to sheer off in layers. So there are some durability concerns if it doesn't do the best just cutting the material.

My room have a sliding door in my new apartment, and there was a huge gap which basically let through any sound coming from the kitchen. I bought this product and was skeptical that it could change anything, but oh my did it work! It now block sounds like if I had a real, sealed door. Cutting it was messy and it is by no means a clean finish, but it functions very well (I'll paint it white eventually).

The glue will ruin your wall, i usually use 3M with foam, which is easily removed with no damage on the wall. I wasnt impressed with the quality

I used it to soundproofing the room，it dampen the sound for some extent，but it doesn't help much with soundproofing，you need massive materials for soundproofing，thank you for Amazon customer service..

This is not a product to "soundproof" a room. If you buy this with that purpose in mind, you will not achieve the results you are after.This is also not an ideal product to properly treat a room as it is not as absorptive in the lows and subs as one would really need to deal with standing waves and such.All that said, I purchased to put up in my drum recording room as it is a concrete basement and therefore very reflective. Worked well for my intended purpose which was to absorb some of the high/mid frequency reflections from my drums and cymbals.

I installed it on the door of basement, it works to decrease the sound but after a while some of them felt down and I should install it again with a new glue.