This section is a list of all current heater grid sizes and shapes. Universal Automotive Sideview Mirror Glass 12 Volts Heater Grid, AKA Heat Element or Heater Pad. The heater grid is self adhesive on the side that sticks to back of the mirror glass, and has 2 prong connectors to connect the electrical wire to it. Use the filter for various sizes, and also check the picture that shows the shape and position of electrical connectors to find proper fit for your purpose. Contact us if you need further help.