No, both sides of the window are identical, so it doesn't matter which side faces the laser.Related ArticlesBuyer's Guide to Laser Safety WindowsWhat is the difference between the laser safety face shield and the laser safety welding face shield?Is there a laser safety window that can protect against both 455nm and 1064nm wavelength lasers?Laser Welding Safety (handheld): What Safety Equipment Do You Need for a Fiber Laser Welder?Transparent Laser Safety Windows vs Laser Window Coverings: What Should You Use?
