This disclosure describes systems, methods, and devices related to power spectral density (PSD) limit. A device may generate a frame comprising one or more elements to be sent to a first station device, wherein the frame is to be sent using a 6 GHz band. The device may include in the frame, information associated with a PSD limit on a per bandwidth size basis of the 6 GHz band. The device may cause to send the frame to the first station device.