Abstract: A screen mountable on a chairback of a chair can include a primary panel, a vertical strap, and a brace assembly. The primary panel can have a front and back sides, extend between first and second lateral edges and between top and bottom vertical edges. The vertical strap can be fixed to the front side at first and second ends and extend around the chairback. The vertical strap can be formed to elastically stretch around the chairback. The brace assembly can be fixed to the front side to urge the top vertical edge forward. A second end of the brace assembly can be selectively engageable with the front side at a second position above the first position. The second end can be engaged with the front side in operation and disengaged from the front side when not in operation.