v_slab_compat-1.20-2.1-fabric.jar is a release file of the Minecraft mod Vertical Slabs Compat for Fabric, made for Minecraft 1.20.1. It was published on December 16, 2023 and is 0.1 MB in size. For the full description, screenshots and every other version, visit the Vertical Slabs Compat mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.