Pretty straight forward. It's a piece of glass for the front driver door on a 2004 Nissan Altima. It may fit other years. Check with the dealer.
I know it'd go for way more if you went to the wrecking yard or a glass shop. Not new, but a very affordable way to fix your problem without resorting to using duct tape and a plastic bag.
Pictures to follow. To dark now...
But, c'mon, it's a piece of glass...