Glass bead shim kits

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Question
Answer
You can only use one GBK Glass Bead Kit (1/4") per device on fire rated openings. Glass Bead Kit is for use on doors with raised glass beads.
Shim Kits, GBK,SK19R, SK18RMC, SK17RMC, SK19V, SK18V, SK17V
Minimum dimensions to cutouts for glass lights: Vertical edge of door to edge of cutout = 5 29/32" Top of door to top of cutout = 6" Bottom of door to bottom of cutout = 10" Reinforcing chann...