161 9" Natural Himalayan Dog Shaped Salt Lamp. This Natural Himalayan salt lamp is approximately 9" tall x 6" wide. Outlet plug included with dimmer switch. Natural Himalayan Salt laps can purify the air in your home or office, improve your health by removing harmful indoor electromagnetic fields and other pollutants. Absorbing water and particles from the air around you, it also takes positive ions with them. When the salt lamp is heated by the bulb it releases cleansed water vapor back into the air. Negative ions are expelled through the rock which help to increase cilial activity, keeping your lungs clear.