Applied-Energistics-2-tilera-Edition/src/main/resources/assets/appliedenergistics2/models/block/stairs/fluix_inner.json

{
    "parent": "block/inner_stairs",
    "textures": {
        "bottom": "appliedenergistics2:blocks/fluix_block",
        "side": "appliedenergistics2:blocks/fluix_block",
        "top": "appliedenergistics2:blocks/fluix_block"
    }
}