Acoustic Screen - Microphone Isolation Shield: DIY Double vs DIY Single vs Stock

The Acoustic Screen is sold as Microphone Isolation Shield. From the packaging to the one sheet installation instruction, the is no mention of an actual brand. So it is most likely a Chinese product.
The DIY-Version is more effective than the original one, but you can't expect wonders!
Material used:
www.temu.com/goods.html?_bg_f...