Ok, I got these thermal curtains from a dept store. JCPenny sells them. They are like 20 bucks or cheaper. They block out light and heat and sound. I am throwing over my grow tents that are setup with the fans on the outside and have shitty light leaks and wow nothing get thru. Really they muffled the sound like 90 percent. If yu ever thrown a pile of towls on your online to shut it up uoo know what I mean. This works better. Is smaller and looks good. I also I hung over the front of my grow tent and it keeps out all the light leeks. I got shitty eBay tents and I got leeks and zipper shit. While they served me well and I have had no hermies and will buy again these tents got probs. Also I hung on my sliding door and all the heat is blocked. they are nice.

seriously I got an 8 in valueline and a 6 in valueline and I sleep soundly right next to them. They sound like house fans!

Nice... Im gonna look into em

sounds like what i make myself...

take some trashbags, fold over to desired thickness tape together to desired width and length, but then i taped mylar to those and am hanging on my walls and using as a door to my space, it takes a while but it's sweet. am also using for the bottom of my room for that hot pocket crisper feel.