The Fairview 12 Volt defogger will defog your windshield in minutes. It is easy to install with either a sure grip suction cup enabling the defogger to be easily removed and stowed when not in use or a permanent screw-down base and a standard lighter plug. The genuine PTC ceramic element generates 340 BTU’s of heat to defog your windshield quickly. The Fairview is completely safe; it is warm to the touch but is never hot. The small footprint heater takes up little space on the dash.Specifications Dimensions: 6.75” x 2.5” x 4.0”Draw: 8.3A, 100W, 340BTUsCare and Maintenance The Fairview requires very little maintenance. Unplug the unit before cleaning. A vacuum can be used to clear the heater of any dust build-up, and a dry cloth may be used to wipe the outer surface. Do not attempt to open the unit to clean. Do not use gasoline, thinner or other harsh chemicals to clean the unit.