Three and a half pounds is what sets this one apart - it is carried between rooms in one hand and folds to 1.6 in thick behind a door. Three fir panels rotate a full 180 degrees on their hinges, so the fence sets up in an I, a U or a Z shape depending on the corner it has to block, and further panels can be added to extend the run. At 30 in tall it holds back cats and small to medium dogs. Expanded it spans 63 in. Solid fir wood in brown, with a gray version also offered.