private static final AxisAlignedBB BOUNDING_BOX = new AxisAlignedBB(0, 0, 14/16, 1, 1, 14/16);

// later on
@Override
	public AxisAlignedBB getBoundingBox(IBlockState state, IBlockAccess source, BlockPos pos)
	{
		return BOUNDING_BOX;
	}

	@Override
	public AxisAlignedBB getCollisionBoundingBox(IBlockState blockState, World worldIn, BlockPos pos)
	{
		return BOUNDING_BOX;
	}