Abstract: This disclosure provides a lighting device that includes an outer frame, an inner frame, and a planar light emitter. The outer frame includes a top member, a bottom member, and one or more vertical members connected between the top member and the bottom member. The inner frame has a geometry smaller than the outer frame, wherein the inner frame is located within the outer frame and connected to the outer frame via one or more connecting arms, wherein the length of the connecting arms determines the vertical position of the inner frame within the outer frame. The planar light emitter is mounted to the inner frame, which includes a plurality of light-emitting diodes (LEDs), wherein the plurality of LEDs are located in a two-dimensional plane that is approximately parallel with the top member and the bottom member.