Glass very thin 0.3 . No installation instructions. Professional installer had difficulty to install. 
Hardware - horizontal rails are very light, poor quality. Wall connector have black, unsightly rubber inserts not clear like in the photos that are on the site. Has only one door glider. 
Door shakes and bangs against bottom. Had none of these issues with the OVE door from Lowe’s. Would not recommend this specific double sliding door. Doesn’t stay closed. Paid a lot to get it installed and very disappointed