Burco 4137 Flat Driver Side Power Replacement Mirror Glass for 05-07 Cadillac STS (2005, 2006, 2007) WHAT'S INCLUDED - Included is the Driver's side Flat mirror glass with lasered holes in the reflective coating. This is the Replacement Glass Only. MEASURE YOUR GLASS - This mirror glass measures 7.625" diagonally (Longest diagonal dimension from top corner to opposing bottom corner). It is very important to measure your glass to ensure that you are ordering the correct mirror for your vehicle. Also, pay attention to the shape of your mirror and compare to the shape of the replacement mirror. It is common to have multiple Burco Redi Cuts mirror options for your vehicles specific make, model, & year SUPERIOR QUALITY  Burco Mirror Glass Replacements are an economical and quality alternative to high-priced OEM mirror assemblies. All Burco Mirror Glass is composed of high quality glass manufactured in the USA using high-end CNC equipment which meets or exceeds OEM specifications. EASY INSTALLATION  Each Burco Mirror Glass includes an installation code on the outside of the box and a step-by-step instruction sheet inside the box to make the installation of your new glass as simple as possible. Installation codes are specific to each part, so please follow the install code that corresponds to your mirror glass. The instruction sheet can also be found below in the technical details. VEHICLE FITMENT  2005-2007 Cadillac STS. See Below for Full List of Vehicles.