It's a Vista Pivot II door. Can't remember, but I think it was 36". You can get them at Home Depot and I imagine most home improvement stores. They come in a variety of metal colors and glass texture. Installation is with small screws (don't know the length, my install used shorter screws than come with door kit to ensure they didn't screw into the sliding door), screw anchors and caulk. Not too tough, just don't want screws so long as to go into the sliding doors! It has a magnetic seal (we'll see if that works when on the road or if I have to install something more substantial to keep the door shut). Here's the installation guide: http://www.sterlingplumbing.com/onli.../1172319_2.pdf
I imagine most people can complete it in a couple hours.