Schematic_Pack_2900.zip is a release file of the Minecraft mod project-234990, made for Minecraft 1.7.6, 1.9.1, 1.9.3, 1.8.7, 1.7.4, 1.7.7, 1.7.5, 1.10-Snapshot, 1.9.4, 1.9.2, 1.8.4, 1.7.9 and more. It was published on July 10, 2016 and is 45.6 MB in size. For the full description, screenshots and every other version, visit the project-234990 mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.