ploof-pack/faithless/assets/minecraft/models/block/cut_sandstone_slab_double.json

{
  "parent": "block/cube_bottom_top",
  "textures": {
    "bottom": "block/sandstone_top",
    "top": "block/sandstone_top",
    "side": "block/cut_sandstone_slab_side"
  }
}