JAFF Clear Glass.zip is a release file of the Minecraft resource pack Just a Few Fish Better Glass, made for Minecraft 1.12.2. It was published on August 4, 2020 and is 0.2 MB in size. For the full description, screenshots and every other version, visit the Just a Few Fish Better Glass resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.