This is a Quickserv brand drive-through auto-closing sliding service window, left hand slide, and comes with 1/4" clear tempered glass. This is brand new in box . It was ordered and turned out to be incorrect for the specific job so it was never used.
Here's some info from the Quickserv website:
-1/4” clear tempered safety glass
-Weather-resistant and sealed to protect from the elements
-clear anodized aluminum
-Corrosion-resistant material: anodized aluminum and #304-#3 finish stainless steel
-Security locking systems
-Easy manual operation upon power failure
-Maximum security hook-bolt locks
-ETL listed
Unit Size: 47-1/2"W x 43-1/2"H
Service Opening: 20"W x 31-1/2"H
Rough Opening: 47-7/8"W x 43-7/8"H