Mirrex 70672 Fits Driver Left Side Replacement for Cadillac STS 2008 2009 2010 2011 Mirror Glass

Diagonal Longest Points Size: 7 13/16 Features: Mirror Glass Anti-Glare.1. Remove all existing glass from the mirror head’s plastic inner platform (backing plate).2. Apply the adhesive patches and/or silicone/urethane to the replacement mirror’s back or to the backing plate itself.3. Align and press replacement mirror to the backing plate.4. Clean the installed mirror with urethane-safe glass cleaner.5. Done.6. NOTE: The backing plate mentioned above is your existing backing plate, this mirror does not come with a backing plate.