first class(noun) the highest rank in a classification. first class, 1st class, first-class mail, 1st-class mail(noun) mail that includes letters and postcards and packages sealed against inspection. first class(adj) the most expensive accommodations on a ship or train or plane.
A very basic sliding glass door, without professional installation, can cost $300 to $500, and this is the type of door most people think of when they hear the term sliding glass door â a six-foot pair of plain glass panels inside a simple frame. An eight-foot door can run $800 to $1,200 without professional installation.
1 To have a contractor install the sliding door, the installation prices alone can cost anywhere from $500 to $1,500. 2  This will greatly depend on the door as well as the contractor you hire to install it. 3  For instance, Marvin.com is an online store that has a lot of differently designed sliding and swinging glass doors. You will be able to select the type of door frame as well as the type of glass that will be used for the door. 2  The price of the sliding glass doors sold for the bathroom usually ranges anywhere from $500 to $1,200.