This window kit is from PcMods.com. It is printed with name "PcMods.com Acrylic Window Kit" on the packaging and comes with PcMods.com window installation instructions. The packaging from Cyberguys were perfect with the air bags, ensuring that the window doesn't get cracked while shipping. The stupid thing is I dropped the window while I was unpacking it. As for cutting the hole on the case panel, I suggest some sort of electric tool like a dremel as the nibbler tool that I brought from CyberGuys seems like cutting cardboard paper with those small child proof sissors that they give kindergarten kids for arts and craft.