Most drivers will have noticed the pattern of black dots at the ... the solid black frit band around the edges of the ...

According to experts, the black enamel strip and dots, also referred to as a 'frit', are essential in preventing ... The black dot pattern helps prevent this by acting like a heat spreader ...

Without the frit ... black dot pattern helps prevent this by acting like a heat spreader. “It keeps the solid black band from heating up significantly faster than the rest of the glass ...