Abstract: A chair hanger system includes a front plate, a back plate opposing the front plate, a plate separator defining a gap between the front plate and the back plate, and a first and second hook attached to the back plate. The first hook defines a first opening geometry and the second hook defines a second opening geometry. A set of spacer blocks includes a first spacer block configured to insert within the first opening to reduce and change the first opening geometry, and a second spacer block configured to insert within the second opening to reduce and change the second opening geometry. A chair hanger device is also described.

Abstract: An article of furniture includes a cushioned seating portion, a rigid panel configured adjacent to the cushioned seating portion, a first group of exciters configured on a surface of the rigid panel, and a controller communicatively coupled to the first and second plurality of exciters.

Abstract: A chair includes a seating portion connected to a back portion and a hanger connected to the back portion. The hanger includes a front plate, a back plate opposing the front plate, and a plate separator defining a lower and an upper gap between the front plate and the back plate. An interior surface of the front plate that at least partially defines the lower gap includes a first concave radius of curvature opening away from the back plate and a sidewall portion angled towards the back plate. An interior surface of the plate separator that at least partially defines the lower gap includes a second concave radius of curvature opening away from the back plate and a sidewall portion angled towards the back plate.