The Big Wall I-tent is a beefed up version of the standard 2-door I-tent and is made to perfectly integrate on a double BD Skylounge portaledge. I don't know how well it fits onto other brands' double ledges. The tubing on my BD Double Sylounge measures 84" x 42" (external dimensions) but the tent can be squished a bit in length or width to fit ledges that are slightly smaller.   Weight Tent: 6lbs, 8oz Stuff Sack: 4 oz   Because the tent is a prototype, it isn't warranted by Bibler.