Looks like a Smittybilt top, but not the safari version:
Smittybilt Jeep Wrangler Safari Hard Top 517702 (07-18 Jeep Wrangler JK 2 Door)
FREE SHIPPING! Puts the Fun in Functional. No vehicle on the market projects the same sense of adventure as the Jeep Wrangler. The Smittybilt Safari Hard Top wiwww.extremeterrain.com
You might want to check with your local glass shop, they may be able to fix you up.
Frank
Most local glass shops should be able to cut glass to spec to be honest. They deal with custom applications frequently I'm sure.
Keep in mind all vehicle windows must be tempered glass. Tempered glass cannot be cut to size; it has to be cut to the correct size, then tempered. This is usually an order. You could consider using plexiglass or lexan...
If you go back to Lowes, go to the hardware section and they have a rack with a variety of sizes of "U" channel in aluminum. Or, you could go with a strip of drilled flat (be very careful drilling thru plexiglass) to give some strength to the bottom edge.I contacted about 8 different top manufactures and no one recognized it, and even if they did, they no longer sell glass. Dealer charges $900 for OEM glass, and I was about to pay $3,000 for a new top. I ended up going to Lowes and for $92 dollars bought a sheet of plexiglass big enough for two windows. I cut cardboard for a template and made a plexiglass window and it has worked out well. I am pretty happy with the result and saved the top from the landfill. I will probably order a bottom trim piece that will lock it behind the gate or use magnetic strip tape.